wovepaper — the arXiv observatory

papers

Publications (117)

cond-mat.mtrl-sci2006

The Anomalous Skin Effect in Single Crystal Relaxor Ferroelectric PZN-xPT and PMN-xPT

Guangyong Xu, P. M. Gehring, C. Stock +1

X-ray and neutron scattering studies of the lead-based family of perovskite relaxors PZN- $x$ PT and PMN- $x$ PT have documented a highly unusual situation in which the near-surface re…

cond-mat.mtrl-sci2015

(C $_{4}$ H $_{12}$ N $_{2}$ )[CoCl $_{4}$ ] -tetrahedrally coordinated Co $^{2 +}$ without the orbital degeneracy

C. Decaroli, A. M. Arevalo-Lopez, C. H. Woodall +4

We report on the synthesis, crystal structure, and magnetic properties of a previously unreported Co $^{2 +}$ $S = \frac{3}{2}$ compound, (C $_{4}$ H $_{12}$ N $_{2}$ )[CoCl $_{4}$ ], based up…

cond-mat.mtrl-sci2011

Reply to comment by Mayers et al. on "High energy neutron scattering from hydrogen using a direct geometry spectrometer"

C. Stock, R. A. Cowley

In this reply, we point out several criticisms of the analysis in arXiv:0909.2633 and show that the comment does not change the underlying conclusion presented by ourselves that th…

cond-mat.mtrl-sci2019

Spin-wave directional anisotropies in antiferromagnetic Ba $_{3}$ NbFe $_{3}$ Si $_{2}$ O $_{14}$

C. Stock, R. D. Johnson, N. Giles-Donovan +14

Ba $_{3}$ NbFe $_{3}$ Si $_{2}$ O $_{14}$ (langasite) is structurally and magnetically single domain chiral with the magnetic helicity induced through competing symmetric exchange interac…

cond-mat.mtrl-sci2015

Phonon coupling to dynamic short-range polar order in a relaxor ferroelectric near the morphotropic phase boundary

John A. Schneeloch, Zhijun Xu, B. Winn +4

We report neutron inelastic scattering experiments on single crystal PbMg $_{1/3}$ Nb $_{2/3}$ O $_{3}$ doped with 32\% PbTiO $_{3}$ , a relaxor ferroelectric that lies close to the morph…

cond-mat.str-el2021

Kitaev interactions in the Co honeycomb antiferromagnets Na $_{3}$ Co $_{2}$ SbO $_{6}$ and Na $_{2}$ Co $_{2}$ TeO $_{6}$

M. Songvilay, J. Robert, S. Petit +10

Co $^{2 +}$ ions in an octahedral crystal field, stabilise a j $_{e f f}$ = 1/2 ground state with an orbital degree of freedom and have been recently put forward for realising Kitaev in…

cond-mat.str-el2017

Structure and Magnetism in the Bond Frustrated Spinel, ZnCr2Se4

P. Zajdel, W-Y. Li, W. Van Beek +5

The crystal and magnetic structures of stoichiometric ZnCr2Se4 have been investigated using synchrotron X-ray and neutron powder diffraction, muon spin relaxation (muSR) and inelas…

cond-mat.mtrl-sci2009

A reassessment of the Burns temperature and its relationship to the diffuse scattering, lattice dynamics, and thermal expansion in the relaxor PMN

P. M. Gehring, H. Hiraka, C. Stock +5

We have used neutron scattering techniques to characterize the diffuse scattering and lattice dynamics in single crystals of the relaxor PMN from 10K to 900K. We observed two disti…

cond-mat.mtrl-sci2010

Interplay between static and dynamic polar correlations in relaxor Pb(Mg_{1/3}Nb_{2/3})O_{3}

C. Stock, L. Van Eijck, P. Fouquet +7

We have characterized the dynamics of the polar nanoregions in Pb(Mg $_{1/3}$ Nb $_{2/3}$ )O $_{3}$ (PMN) through high-resolution neutron backscattering and spin-echo measurements of th…

cond-mat.mtrl-sci2014

Neutron inelastic scattering measurements of low energy phonons in the multiferroic BiFeO3

John A. Schneeloch, Zhijun Xu Jinsheng Wen, P. M. Gehring +11

We present neutron inelastic scattering measurements of the low-energy phonons in single crystal BiFeO3. The dispersions of the three acoustic phonon modes (LA along [100], TA1 alo…

cond-mat.str-el2003

Ground State of Relaxor Ferroelectric $P b (Z n_{1/3} N b_{2/3}) O_{3}$

Guangyong Xu, Z. Zhong, Y. Bing +3

High energy x-ray diffraction measurements on Pb(Zn $_{1/3}$ Nb $_{2/3}$ )O $_{3}$ (PZN) single crystals show that the system does not have a rhombohedral symmetry at room temperature as…

cond-mat.str-el2022

Neutron diffraction in MnSb2O6: Magnetic and structural domains in a helicoidal polar magnet with coupled chiralities

E. Chan, J. PÃ¡sztorovÃ¡, R. D. Johnson +10

MnSb $_{2}$ O $_{6}$ is based on the structural chiral $P$ 321 space group #150 where the magnetic Mn $^{2 +}$ moments ( $S = 5/2$ , $L \approx 0$ ) order antiferromagnetically at $T_\mathrm{N…

cond-mat.str-el2019

Spin-Orbit Excitons in CoO

P. M. Sarte, M. Songvilay, E. Pachoud +10

CoO has an odd number of electrons in its unit cell, and therefore is expected to be metallic. Yet, CoO is strongly insulating owing to significant electronic correlations, thus cl…

cond-mat.str-el2011

Probing high-energy electronic excitations using inelastic neutron scattering

Young-June Kim, A. P. Sorini, C. Stock +3

High-energy, local multiplet excitations of the d-electrons are revealed in our inelastic neutron scattering measurements on the prototype magnetic insulator NiO. These become allo…

cond-mat.str-el2011

Anisotropic critical magnetic fluctuations in the ferromagnetic superconductor UCoGe

C. Stock, D. A. Sokolov, P. Bourges +6

We report neutron scattering measurements of critical magnetic excitations in the weakly ferromagnetic superconductor UCoGe. The strong non-Landau damping of the excitations we obs…

cond-mat.mtrl-sci2017

Molecular orientational melting within a lead-halide octahedra framework - the order-disorder transition in CH3NH3PbBr3

K. L. Brown, S. F. Parker, I. Robles Garcia +3

Lead-halide organic-inorganic perovskites consist of an inorganic host framework with an organic molecule occupying the interstitial space. The structure and dynamics of these mate…

cond-mat.supr-con2010

Interstitial Iron Controlled Superconductivity in Fe1+xTe0.7Se0.3

E. E. Rodriguez, C. Stock, P-Y Hsieh +3

The superconducting series, Fe(Te,Se), has a complex structural and magnetic phase diagram that is dependent on composition and occupancy of a secondary interstitial Fe site. In th…

cond-mat.supr-con2007

Spin resonance in the d-wave superconductor CeCoIn5

C. Stock, C. Broholm, J. Hudis +2

Neutron scattering is used to probe antiferromagnetic spin fluctuations in the d-wave heavy fermion superconductor CeCoIn $_{5}$ (T $_{c}$ =2.3 K). Superconductivity develops from a s…

cond-mat.mtrl-sci2019

Lifetime-shortened acoustic phonons and static order at the Brillouin zone boundary in the organic-inorganic perovskite CH $_{3}$ NH $_{3}$ PbCl $_{3}$

M. Songvilay, M. Bari, Z. -G. Ye +7

Lead halide hybrid perovskites consist of an inorganic framework hosting a molecular cation located in the interstitial space. These compounds have been extensively studied as they…

cond-mat.mtrl-sci2008

Response of polar nanoregions in 68%Pb(Mg1/3Nb2/3)O3-32%PbTiO3 to a [001] electric field

Jinsheng Wen, Guangyong Xu, C. Stock +1

We report neutron diffuse scattering measurements on a single crystal of 68%Pb(Mg1/3Nb2/3)O3-32%PbTiO3. Strong diffuse scattering is observed at low temperatures. An external field…

cond-mat.mtrl-sci2017

Crystal field excitations and magnons: their roles in oxyselenides Pr2O2M2OSe2 (M = Mn, Fe)

R. K. Oogarah, C. P. J. Stockdale, C. Stock +4

We present the results of neutron scattering experiments to study the crystal and magnetic structures of the Mott-insulating transition metal oxyselenides Pr2O2M2OSe2 (M = Mn, Fe).…

cond-mat.str-el2010

Helical spin-waves, magnetic order, and fluctuations in the langasite compound Ba3NbFe3Si2O14

C. Stock, L. C. Chapon, A. Schneidewind +6

We have investigated the spin fluctuations in the langasite compound Ba3NbFe3Si2O14 in both the ordered state and as a function of temperature. The low temperature magnetic structu…

cond-mat.str-el2021

Magnetic surface reconstruction in the van-der-Waals antiferromagnet Fe $_{1 + x}$ Te

C. Trainer, M. Songvilay, N. Qureshi +9

Fe $_{1 + x}$ Te is a two dimensional van der Waals antiferromagnet that becomes superconducting on anion substitution on the Te site. The parent phase of Fe $_{1 + x}$ Te is sensitive to…

cond-mat.str-el2013

The magnetic and structural properties near the Lifshitz point in Fe1+xTe

E. E. Rodriguez, D. A. Sokolov, C. Stock +5

We construct a phase diagram of the parent compound Fe1+xTe as a function of interstitial iron x in terms of the electronic, structural, and magnetic properties. For a concentratio…

cond-mat.str-el2024

Anisotropic excitonic magnetism from discrete $C_{4}$ symmetry in CeRhIn $_{5}$

D. J. Brener, I. Rodriguez Mallo, H. Lane +6

Anisotropy in strongly correlated materials is a central parameter in determining the electronic ground state and is tuned through the local crystalline electric field. This is not…

cond-mat.str-el2010

Neutron scattering study of a quasi-2D spin-1/2 dimer system Piperazinium Hexachlorodicuprate under hydrostatic pressure

Tao Hong, C. Stock, I. Cabrera +5

We report inelastic neutron scattering study of a quasi-two-dimensional S=1/2 dimer system Piperazinium Hexachlorodicuprate under hydrostatic pressure. The spin gap Î becomes soft…

cond-mat.supr-con2009

Magnetic field resonantly enhanced free spins in underdoped YBa $_{2}$ Cu $_{3}$ O $_{6 + x}$

C. Stock, W. J. L. Buyers, K. C. Rule +4

Using neutron scattering, we investigate the effect of a magnetic field on the static and dynamic spin response in heavily underdoped superconducting YBa $_{2}$ Cu $_{3}$ O $_{6 + x}$ (YB…

cond-mat.supr-con2015

Separation of magnetic and superconducting behaviour in YBCO6.33 (Tc=8.4 K)

Zahra Yamani, W. J. L. Buyers, F. Wang +11

Neutron scattering from high-quality YBa2Cu3O6.33 (YBCO6.33) single crystals with a Tc of 8.4 K shows no evidence of a coexistence of superconductivity with long-range antiferromag…

cond-mat.str-el2016

Solitary magnons in the $S = \frac{5}{2}$ antiferromagnet CaFe $_{2}$ O $_{4}$

C. Stock, E. E. Rodriguez, N. Lee +10

CaFe $_{2}$ O $_{4}$ is a $S = \frac{5}{2}$ anisotropic antiferromagnet based upon zig-zag chains having two competing magnetic structures, denoted as the A ($\uparrow \uparrow \downarro…

cond-mat.str-el2020

Van Vleck excitons in Ca $_{2}$ RuO $_{4}$

P. M. Sarte, C. Stock, B. R. Ortiz +2

A framework is presented for modeling and understanding magnetic excitations in localized, intermediate coupling magnets where the interplay between spin-orbit coupling, magnetic e…

cond-mat.supr-con2003

Dynamic Stripes and Resonance in the Superconducting and Normal Phases of YBa2Cu3O6.5 Ortho-II Superconductor

C. Stock, W. J. L. Buyers, R. Liang +5

We describe the relation between spin fluctuations and superconductivity in a highly-ordered sample of YBaCu3O6.5 using both polarized and unpolarized neutron inelastic scattering.…

cond-mat.supr-con2014

Neutron Scattering Evidence for a Periodically-Modulated Superconducting Phase in the Underdoped Cuprate La $_{1.905}$ Ba $_{0.095}$ CuO $_{4}$

Zhijun Xu, C. Stock, Songxue Chi +4

The role of antiferromagnetic spin correlations in high-temperature superconductors remains a matter of debate. We present inelastic neutron scattering evidence that gapless spin f…

cond-mat.mtrl-sci2019

Decoupled molecular and inorganic framework dynamics in CH $_{3}$ NH $_{3}$ PbCl $_{3}$

M. Songvilay, Zitian Wang, V. Garcia Sakai +7

The organic-inorganic lead halide perovskites are composed of organic molecules imbedded in an inorganic framework. The compounds with general formula CH $_{3}$ NH $_{3}$ PbX $_{3}$ (MA…

cond-mat.mtrl-sci2018

Spontaneous decay of a soft optical phonon in the relaxor ferroelectric PbMg $_{1/3}$ Nb $_{2/3}$ O $_{3}$

C. Stock, P. M. Gehring, R. A. Ewings +4

We report the spontaneous decay of a soft, optical phonon in a solid. Using neutron spectroscopy, we find that specific phonon lifetimes in the relaxor PbMg $_{1/3}$ Nb $_{2/3}$ O$_{3}…

cond-mat.str-el2025

Magnetoelastic dynamics of the "spin Jahn-Teller" transition in CoTi $_{2}$ O $_{5}$

K. Guratinder, R. D. Johnson, D. Prabhakaran +10

CoTi $_{2}$ O $_{5}$ has the paradox that low temperature static magnetic order is incompatible with the crystal structure owing to a mirror plane that exactly frustrates magnetic int…

cond-mat.str-el2015

Determination of spin and orbital magnetization in the ferromagnetic superconductor UCoGe

M. W. Butchers, J. A. Duffy, J. W. Taylor +6

The magnetism in the ferromagnetic superconductor UCoGe has been studied using a combination of magnetic Compton scattering, bulk magnetization, X-ray magnetic circular dichroism a…

cond-mat.str-el2021

Absence of moment fragmentation in the mixed $B$ -site pyrochlore Nd $_{2}$ GaSbO $_{7}$

S. J. Gomez, P. M. Sarte, M. Zelensky +14

Nd-based pyrochlore oxides of the form Nd $_{2} B_{2}$ O $_{7}$ have garnered a significant amount of interest owing to the moment fragmentation physics observed in Nd $_{2}$ Zr $_{2}$ O$_…

cond-mat.mtrl-sci2003

Universal Static and Dynamic Properties of the Structural Transition in Pb(Zn1/3Nb2/3)O3

C. Stock, R. J. Birgeneau, S. Wakimoto +4

The relaxors Pb(Zn $_{1/3}$ Nb $_{2/3}$ )O $_{3}$ (PZN) and Pb(Mg $_{1/3}$ Nb $_{2/3}$ )O $_{3}$ (PMN) have very similar properties based on the dielectric response around the critical tempe…

cond-mat.str-el2026

Spin reorientations in structurally metastable, disordered, and hexagonal Cr7Te8

K. Guratinder, T. G. Romig, H. C. Mandujano +2

Vapor deposited two-dimensional Cr $_{7}$ Te $_{8}$ displays unusual temperature dependent Hall effect properties, including a room temperature anomalous Hall effect, sign reversals o…

cond-mat.str-el2017

Evidence for the Confinement of Magnetic Monopoles in Quantum Spin Ice

P. M. Sarte, A. A. Aczel, G. Ehlers +11

Magnetic monopoles are hypothesised elementary particles connected by Dirac strings that behave like infinitely thin solenoids. Despite decades of searches, free magnetic monopoles…

cond-mat.str-el2010

Incommensurate short-range order in the S=1 triangular antiferromagnet NiGa2S4

C. Stock, S. Jonas, C. Broholm +5

Neutron scattering is used to investigate spin correlations in ultra pure single crystals of the S=1 triangular lattice NiGa2S4. Despite a Curie-Weiss temperature of Theta_CW=-80(2…

cond-mat.str-el2017

Transverse acoustic phonon anomalies at intermediate wavevectors in MgV $_{2}$ O $_{4}$

T. Weber, B. Roessli, C. Stock +7

Magnetic spinels (with chemical formula $A X_{2}$ O $_{4}$ , with $X$ a 3 $d$ transition metal ion) that also have an orbital degeneracy are Jahn-Teller active and hence possess a coupl…

cond-mat.str-el2014

Excitations in the quantum paramagnetic phase of the quasi-one-dimensional Ising magnet CoNb $_{2}$ O $_{6}$ in a transverse field: Geometric frustration and quantum renormalization effects

I. Cabrera, J. D. Thompson, R. Coldea +5

The quasi-one-dimensional (1D) Ising ferromagnet CoNb $_{2}$ O $_{6}$ has recently been driven via applied transverse magnetic fields through a continuous quantum phase transition from sp…

cond-mat.mtrl-sci2008

The effect of local dipole moments on the structure and lattice dynamics of K0.98Li0.02TaO3

Jinsheng Wen, Guangyong Xu, C. Stock +5

We present high energy x-ray (67 keV) and neutron scattering measurements on a single crystal of K $_{1 - x}$ Li $_{x}$ TaO $_{3}$ for which the Li content ( $x = 0.02$ ) is less than $x_c = 0.02…

cond-mat.str-el2017

Competing spin density wave, collinear, and helical magnetism in Fe1+xTe

C. Stock, E. E. Rodriguez, P. Bourges +5

The Fe1+xTe phase diagram consists of two distinct magnetic structures with collinear order present at low interstitial iron concentrations and a helical phase at large values of x…

cond-mat.str-el2025

Zeeman split Kramers doublets in spin-supersolid candidate Na $_{2}$ BaCo(PO $_{4}$ ) $_{2}$

T. I. Popescu, N. Gora, F. Demmel +6

Na $_{2}$ BaCo(PO $_{4}$ ) $_{2}$ is a triangular antiferromagnet that displays highly efficient adiabatic demagnetization cooling (J. Xiang $et al.$ Nature $625$ , 270 (…

cond-mat.str-el2018

Disentangling orbital and spin exchange interactions for Co $^{2 +}$ on a rocksalt lattice

P. M. Sarte, R. A. Cowley, E. E. Rodriguez +14

Neutron spectroscopy was applied to study the magnetic interactions of orbitally degenerate Co $^{2 +}$ on a host MgO rocksalt lattice where no long range spin or orbital order exist…

cond-mat.str-el2023

Acoustic lattice instabilities at the magneto-structural transition in Fe $_{1.057 (7)}$ Te

K. Guratinder, E. Chan, E. E. Rodriguez +7

Fe $_{1.057 (7)}$ Te undergoes a first-order tetragonal to monoclinc structural transition at T $_{S} \sim 70$ K, breaking the C $_{4}$ lattice symmetry and simultaneously breaking time…

cond-mat.str-el2026

Superconductivity and fractionalized magnetic excitations in CeCoIn5

Pyeongjae Park, Shang-Shun Zhang, Pietro M. Bonetti +8

Recent experiments on CeCoIn5 -- a prototypical d-wave superconductor -- indicate that its normal state lies near an unconventional quantum critical point (QCP). One intriguing hyp…

cond-mat.mtrl-sci2009

Soft phonon columns on the edge of the Brillouin zone in the relaxor PbMg1/3Nb2/3O3

I. P. Swainson, C. Stock, P. M. Gehring +7

We report lattice dynamical measurements, made using neutron inelastic scattering methods, of the relaxor perovskite PbMg1/3Nb2/3O3 (PMN) at momentum transfers near the edge of the…

cond-mat.str-el2024

Magnetic field tuned superconducting and normal phase magnetism in CeCo $_{0.5}$ Rh $_{0.5}$ In $_{5}$

A. Howell, M. Songvilay, J. A. Rodriguez-Rivera +7

By tuning superconductivity with an applied magnetic field, we use neutrons to compare the magnetic ordered phases in superconducting and normal states of CeCo $_{0.5}$ Rh $_{0.5}$ In$…

cond-mat.mtrl-sci2012

Evidence for anisotropic polar nanoregions in relaxor PMN: A neutron study of the elastic constants and anomalous TA phonon damping

C. Stock, P. M. Gehring, H. Hiraka +6

We use neutron scattering to characterize the acoustic phonons in the relaxor PMN and demonstrate the presence of an anisotropic damping mechanism directly related to short-range,…

cond-mat.supr-con2008

Spin dynamics near the critical doping in weakly-superconducting underdoped YBa2Cu3O6.35 (Tc=18K)

C. Stock, W. J. L. Buyers, Z. Yamani +5

Using neutron scattering we have determined the magnetic structure and fluctuations in the YBa2Cu3O6.35 superconductor (Tc=18 K). The long-range ordered collinear spins of the insu…

cond-mat.mtrl-sci2020

Imitation of spin density wave order in Cu $_{3}$ Nb $_{2}$ O $_{8}$

N. Giles-Donovan, N. Qureshi, R. D. Johnson +4

Spin density waves, based on modulated local moments, are usually associated with metallic materials, but have recently been reported in insulators which display coupled magnetic a…

cond-mat.mtrl-sci2004

Direct observation of the near-surface layer in Pb(Mg $_{1/3}$ Nb $_{2/3}$ )O $_{3}$ using neutron diffraction

K. Conlon, H. Luo, D. Viehland +5

Spatially resolved neutron diffraction as a function of crystal depth in Pb(Mg $_{1/3}$ Nb $_{2/3}$ )O $_{3}$ reveals the presence of a distinct near-surface region. A dramatic change i…

cond-mat.mtrl-sci2004

An Anomalous Phase in the Relaxor Ferroelectric Pb(Zn $_{1/3}$ Nb $_{2/3}$ )O $_{3}$

Guangyong Xu, Z. Zhong, Y. Bing +3

X-ray diffraction studies on a Pb(Zn $_{1/3}$ Nb $_{2/3}$ )O $_{3}$ (PZN) single crystal sample show the presence of two different structures. An outer-layer exists in the outer most $\si…

cond-mat.str-el2020

Magnetic Fluctuations and the Spin-Orbit Interaction in Mott Insulating CoO

P. M. Sarte, S. D. Wilson, J. P. Attfield +1

Motivated by the presence of an unquenched orbital angular momentum in CoO, a team at Chalk River, including a recently hired research officer Roger Cowley, performed the first ine…

cond-mat.stat-mech2009

High energy neutron scattering from hydrogen using a direct geometry spectrometer

C. Stock, R. A. Cowley, J. W. Taylor +1

Deep inelastic neutron scattering experiments using indirect time-of-flight spectrometers have reported a smaller cross section for the hydrogen atom than expected from conventiona…

cond-mat.supr-con2018

From Ising resonant fluctuations to static uniaxial order in antiferromagnetic and weakly superconducting CeCo(In $_{1 - x}$ Hg $_{x}$ ) $_{5}$ ( $x$ =0.01)

C. Stock, J. A. Rodriguez-Rivera, K. Schmalzl +5

CeCo(In $_{0.990}$ Hg $_{0.010}$ ) $_{5}$ is a charge doped variant of the $d$ -wave CoCoIn $_{5}$ superconductor with coexistent antiferromagnetic and superconducting transitions occurri…

cond-mat.str-el2012

From incommensurate correlations to mesoscopic spin resonance in YbRh2Si2

C. Stock, C. Broholm, F. Demmel +5

Spin fluctuations are reported near the magnetic field driven quantum critical point in YbRh2Si2. On cooling, ferromagnetic fluctuations evolve into incommensurate correlations loc…

cond-mat.str-el2021

From one- to two-magnon excitations in the S=3/2 magnet $I^^{2}$ -CaCr $_{2}$ O $_{4}$

M. Songvilay, S. Petit, F. Damay +7

We apply neutron spectroscopy to measure the magnetic dynamics in the S=3/2 magnet $I^^{2}$ -CaCr $_{2}$ O $_{4}$ (T $_{N}$ =21 K). The low-energy fluctuations, in the ordered state, resemble larg…

cond-mat.mtrl-sci2021

Alignment facility and software for single crystal time of flight neutron spectroscopy

Z. Liu, H. Lane, C. D. Frost +3

An instrument and software algorithm is described for the purpose of characterization of large single crystals at the Alignment Facility (ALF) of the ISIS spallation neutron source…

cond-mat.supr-con2007

Quantum phase transitions in magnetism and superconductivity: emergent spin topology seen with neutrons

W. J. L. Buyers, C. Stock, Z. Yamani +7

Magnetic spins and charges interact strongly in high-temperature superconductors. New physics emerges as layers of copper oxide are tuned towards the boundary of the superconductin…

cond-mat.mtrl-sci2008

Orbital ordering promotes weakly-interacting S=1/2 dimers in the triangular lattice compound Sr3Cr2O8

L. C. Chapon, C. Stock, P. G. Radaelli +1

The weakly interacting S=1/2 dimers system Sr3Cr2O8 has been investigated by powder neutron diffraction and inelastic neutron scattering. Our data reveal a structural phase transit…

cond-mat.str-el2004

Enhancement of magnetic order in the incommensurate phase of Mg-doped CuGeO $_{3}$

C. Stock, S. Wakimoto, R. J. Birgeneau +4

We present elastic neutron scattering results at high magnetic fields for Mg-doped CuGeO $_{3}$ . For low magnesium concentrations, where a spin-Peierls phase is present, we find an…

cond-mat.mtrl-sci2008

Phase instability induced by polar nanoregions in a relaxor ferroelectric system

Guangyong Xu, Jinsheng Wen, C. Stock +1

Local inhomogeneities known as polar nanoregions (PNR) play a key role in governing the dielectric properties of relaxor ferroelectrics - a special class of material that exhibits…

cond-mat.str-el2014

Soft striped magnetic fluctuations competing with superconductivity in Fe_{1+x}Te

C. Stock, E. E. Rodriguez, O. Sobolev +5

Neutron spectroscopy is used to investigate the magnetic fluctuations in Fe_{1+x}Te - a parent compound of chalcogenide superconductors. Incommensurate "stripe-like" excitations so…

cond-mat.str-el2018

Anharmonic magnon excitations in noncollinear and charge-ordered RbFe $^{2 +}$ Fe $^{3 +}$ F $_{6}$

M. Songvilay, E. E. Rodriguez, R. Lindsay +4

RbFe $^{2 +}$ Fe $^{3 +}$ F $_{6}$ is an example of a charge ordered antiferromagnet where iron sites, with differing valences, are structurally separated into two interpenetrating sublatti…

cond-mat.mtrl-sci2010

A two-component model of the neutron diffuse scattering in the relaxor ferroelectric PZN-4.5%PT

Zhijun Xu, Jinsheng Wen, Guangyong Xu +3

We report measurements of the neutron diffuse scattering in a single crystal of the relaxor ferroelectric material 95.5%Pb(Zn $_{1/3}$ Nb $_{2/3}$ )O $_{3}$ -4.5%PbTiO $_{3}$ (PZN-4.5%PT). Ou…

cond-mat.str-el2014

Weak spin interactions in Mott insulating La2O2Fe2OSe2

E. E. McCabe, C. Stock, E. E. Rodriguez +3

Identifying and characterizing the parent phases of iron-based superconductors is an important step towards understanding the mechanism for their high temperature superconductivity…

cond-mat.supr-con2006

Magnetic neutron scattering in hole doped cuprate superconductors

R. J. Birgeneau, C. Stock, J. M. Tranquada +1

A review is presented of the static and dynamic magnetic properties of hole-doped cuprate superconductors measured with neutron scattering. A wide variety of experiments are descri…

cond-mat.mtrl-sci2017

Orphan spins and bound in-gap states in the $S = \frac{5}{2}$ antiferromagnet CaFe $_{2}$ O $_{4}$

C. Stock, E. E. Rodriguez, N. Lee +11

CaFe $_{2}$ O $_{4}$ is an anisotropic $S = \frac{5}{2}$ antiferromagnet with two competing $A$ ( $↑↑↓↓$ ) and $B$ ($\uparrow \downarrow \uparrow \downar…

cond-mat.mtrl-sci2018

Depth dependant element analysis of PbMg $_{1/3}$ Nb $_{2/3}$ O $_{3}$ using muonic X-rays

K. L. Brown, C. P. J. Stockdale, H. Luo +8

The relaxor PbMg $_{1/3}$ Nb $_{2/3}$ O $_{3}$ (PMN) has received attention due to its potential applications as a piezoelectric when doped with PbTiO $_{3}$ (PT). Previous results have…

cond-mat.mtrl-sci2014

The role of random electric fields in relaxors

D. Phelan, C. Stock, J. A. Rodriguez-Rivera +8

PbZr_{1-x}Ti_xO_3 (PZT) and Pb(Mg_{1/3}Nb_{2/3})_{1-x}Ti_xO_3 (PMN- $x$ PT) are complex lead-oxide perovskites that display exceptional piezoelectric properties for pseudorhombohedra…

cond-mat.str-el2009

One-dimensional magnetic fluctuations in the spin-2 triangular lattice Î±-NaMnO2

C. Stock, L. C. Chapon, O. Adamopoulos +6

The S=2 anisotropic triangular lattice alpha-NaMnO2 is studied by neutron inelastic scattering. Antiferromagnetic order occurs at T ~ 45 K with opening of a spin gap. The spectral…

cond-mat.str-el2018

From mean-field localized magnetism to itinerant spin fluctuations in the "Non-metallic metal" - FeCrAs

K. W. Plumb, C. Stock, J. A. Rodriguez-Rivera +6

FeCrAs displays an unusual electrical response that is neither metallic in character nor divergent at low temperatures, as expected for an insulating response, and therefore it has…

cond-mat.supr-con2010

The effect of the pseudogap on suppressing high energy inelastic neutron scattering in superconducting YBa2Cu3O6.5

C. Stock, R. A. Cowley, W. J. L. Buyers +6

We have measured the spin fluctuations in the YBa2Cu3O6.5 (YBCO6.5, Tc=59 K) superconductor at high-energy transfers above ~ 100 meV. Within experimental error, the momentum depend…

cond-mat.str-el2013

Neutron scattering measurements of $dd$ and spin-orbit excitations below the Mott-Hubbard gap in CoO

R. A. Cowley, W. J. L. Buyers, C. Stock +4

Neutron scattering is used to investigate the single-ion spin and orbital excitations below the Mott-Hubbard gap in CoO. Three excitations are reported at 0.870 $\pm$ 0.009 eV, 1.8…

cond-mat.mtrl-sci2011

Non-collinear spin-density wave antiferromagnetism in FeAs

E. E. Rodriguez, C. Stock, K. Krycka +6

We present the magnetic structure of the itinerant monoarsenide, FeAs, with the B31 structure. Powder neutron diffraction confirms incommensurate modulated magnetism with wavevecto…

cond-mat.mtrl-sci2019

Common acoustic phonon lifetimes in inorganic and hybrid lead halide perovskites

M. Songvilay, N. Giles-Donovan, M. Bari +12

The acoustic phonons in the organic-inorganic lead halide perovskites have been reported to have anomalously short lifetimes over a large part of the Brillouin zone. The resulting…

cond-mat.str-el2015

Unstable Spin-Ice Order in the Stuffed Metallic Pyrochlore Pr $_{2 + x}$ Ir $_{2 - x}$ O $_{7 - I^´}$

D. E. MacLaughlin, O. O. Bernal, Lei Shu +12

Specific heat, elastic neutron scattering, and muon spin rotation ( $I^¼$ SR) experiments have been carried out on a well-characterized sample of "stuffed" (Pr-rich) Pr $_{2 + x}$ Ir$_{2-…

cond-mat.str-el2014

Magnetism of the Fe $^{2 +}$ and Ce $^{3 +}$ sublattices in Ce $_{2}$ O $_{2}$ FeSe $_{2}$ : a combined neutron powder diffraction, inelastic neutron scattering and density functional study

E. E. McCabe, C. Stock, J. L. Bettis +2

The discovery of superconductivity in the 122 iron selenide materials above 30 K necessitates an understanding of the underlying magnetic interactions. We present a combined experi…

cond-mat.str-el2021

Metastable antiphase boundary ordering in CaFe $_{2}$ O $_{4}$

H. Lane, E. E. Rodriguez, H. C. Walker +11

CaFe $_{2}$ O $_{4}$ is an $S = 5/2$ antiferromagnet exhibiting two magnetic orders which shows regions of coexistence at some temperatures. Using a Green's function formalism, we model…

cond-mat.mtrl-sci2007

Neutron and X-ray diffraction study of cubic [111] field cooled Pb(Mg1/3Nb2/3)O3

C. Stock, Guangyong Xu, P. M. Gehring +6

Neutron and x-ray diffraction techniques have been used to study the competing long and short-range polar order in the relaxor ferroelectric Pb(Mg $_{1/3}$ Nb $_{2/3}$ )O $_{3}$ (PMN) u…

cond-mat.mtrl-sci2002

Mode-coupling and polar nanoregions in the relaxor ferroelectric Pb(Mg1/3Nb2/3)O3

S. Wakimoto, C. Stock, Z. -G. Ye +3

We present a quantitative analysis of the phonon lineshapes obtained by neutron inelastic scattering methods in the relaxor ferroelectric Pb(Mg1/3Nb2/3)O3 (PMN). Differences in the…

cond-mat.mtrl-sci2013

Coupled magnetic and ferroelectric excitations in PbFe_{1/2}Nb_{1/2}O_{3}

C. Stock, S. R. Dunsiger, R. A. Mole +2

A neutron scattering investigation of the magnetoelectric coupling in PbFe_{1/2}Nb_{1/2}O_{3} (PFN) has been undertaken. Ferroelectric order occurs below 400 K, as evidenced by the…

cond-mat.str-el2023

Orbital character of the spin-reorientation transition in TbMn $_{6}$ Sn $_{6}$

S. X. M. Riberolles, Tyler J. Slade, R. L. Dally +12

Ferromagnetic (FM) order in a two-dimensional kagome layer is predicted to generate a topological Chern insulator without an applied magnetic field. The Chern gap is largest when s…

cond-mat.str-el2019

Relaxing Kondo screened Kramers-doublets in CeRhSi $_{3}$

J. PÃ¡sztorovÃ¡, A. Howell, M. Songvilay +10

CeRhSi $_{3}$ is a superconductor under pressure coexisting with a weakly antiferromagnetic phase characterized by a Bragg peak at $q_{0}$ =( $\sim$ 0.2, 0, 0.5) (N. Aso et al.…

cond-mat.mtrl-sci2002

Ferroelectric Ordering in the Relaxor Pb(Mg1/3Nb2/3)O3 as Evidenced by Low-Temperature Phonon Anomalies

S. Wakimoto, C. Stock, R. J. Birgeneau +5

Neutron scattering measurements of the lowest-energy TO phonons in the relaxor Pb(Mg1/3Nb2/3)O3 (PMN) are reported for 10<=T<=750 K. The soft mode, which is overdamped by the polar…

cond-mat.str-el2022

Excitonic transverse and amplitude fluctuations in the noncollinear and charge-ordered RbFe $^{2 +}$ Fe $^{3 +}$ F $_{6}$

H. Lane, M. Songvilay, R. A. Ewings +1

RbFe $^{2 +}$ Fe $^{3 +}$ F $_{6}$ is an example of an antiferromagnet with charge ordering of the octahedrally coordinated Fe $^{2 +}$ and Fe $^{3 +}$ ions. As well as different spin values,…

cond-mat.mtrl-sci2015

From soft harmonic phonons to fast relaxational dynamics in CH $_{3}$ NH $_{3}$ PbBr $_{3}$

I. P. Swainson, C. Stock, S. F. Parker +3

The lead-halide perovskites, including CH $_{3}$ NH $_{3}$ PbBr $_{3}$ , are components in cost effective, highly efficient photovoltaics, where the interactions of the molecular cations…

cond-mat.mtrl-sci2015

Fluctuating defects in the incipient relaxor K $_{1 - x}$ Li $_{x}$ TaO $_{3}$ (x=0.02)

C. Stock, P. M. Gehring, G. Xu +5

We report neutron scattering measurements of the structural correlations associated with the apparent relaxor transition in K $_{1 - x}$ Li $_{x}$ TaO $_{3}$ for $x = 0.02$ (KLT(0.02)). This co…

cond-mat.str-el2020

Non-linear soliton confinement in weakly coupled antiferromagnetic spin chains

H. Lane, C. Stock, S. -W. Cheong +3

We analyze the low-energy dynamics of quasi one dimensional, large- $S$ quantum antiferromagnets with easy-axis anisotropy, using a semi-classical non-linear sigma model. The saddle…

cond-mat.supr-con2012

Spin fluctuations and superconductivity in powders of Fe_1+xTe_0.7Se_0.3 as a function of interstitial iron concentration

C. Stock, E. E. Rodriguez, M. A. Green

Using neutron inelastic scattering, we investigate the role of interstitial iron on the low-energy spin fluctuations in powder samples of Fe_{1+x}Te_{0.7}Se_{0.3}. We demonstrate h…

cond-mat.supr-con2004

From incommensurate to dispersive spin-fluctuations: The high-energy inelastic spectrum in superconducting YBa2Cu3O6.5

C. Stock, W. J. L. Buyers, R. A. Cowley +8

We have investigated the spin fluctuations at energy transfers up to ~110 meV, well above the resonance energy (33 meV) in the YBa2Cu3O6.5 ortho-II superconductor using neutron tim…

cond-mat.str-el2021

Two-dimensional ferromagnetic spin-orbital excitations in the honeycomb VI $_{3}$

H. Lane, E. Pachoud, J. A. Rodriguez-Rivera +6

VI $_{3}$ is a ferromagnet with planar honeycomb sheets of bonded V $^{3 +}$ ions held together by van der Waals forces. We apply neutron spectroscopy to measure the two dimensional (…

cond-mat.str-el2018

Ordered magnetism in the intrinsically decorated $j_{eff}$ = $\frac{1}{2}$ $I^\pm$ -CoV $_{3}$ O $_{8}$

The antiferromagnetic mixed valence ternary oxide $I^\pm$ -CoV $_{3}$ O $_{8}$ displays disorder on the Co $^{2 +}$ site that is inherent to the $I bam$ space group. The zero field structura…

cond-mat.supr-con2012

Magnetic field splitting of the spin-resonance in CeCoIn5

C. Stock, C. Broholm, Y. Zhao +4

Neutron scattering in strong magnetic fields is used to show the spin-resonance in superconducting CeCoIn5 (Tc=2.3 K) is a doublet. The underdamped resonance (\hbar Î=0.069 \pm 0.…

cond-mat.str-el2017

The magnetic and electronic properties of Oxyselenides - influence of transition metal ions and lanthanides

C. Stock, E. E. McCabe

Magnetic oxyselenides have been the topic of research for several decades being first of interest in the context of photoconductivity and thermoelectricity owing to their intrinsic…

cond-mat.str-el2015

Spin-orbit transitions in $I^\pm$ and $I^^{3}$ -CoV $_{2}$ O $_{6}$

F. Wallington, A. M. Arevalo-Lopez, J. W. Taylor +4

$I^^{3}$ -triclinic and $I^\pm$ -monoclinic polymorphs of CoV $_{2}$ O $_{6}$ are two of the few known transition metal ion based materials that display stepped $1/3$ magnetization plateaus at…

Publications (117)

The Anomalous Skin Effect in Single Crystal Relaxor Ferroelectric PZN-xPT and PMN-xPT

(C4​H12​N2​)[CoCl4​] -tetrahedrally coordinated Co2+ without the orbital degeneracy

Reply to comment by Mayers et al. on "High energy neutron scattering from hydrogen using a direct geometry spectrometer"

Spin-wave directional anisotropies in antiferromagnetic Ba3​NbFe3​Si2​O14​

Phonon coupling to dynamic short-range polar order in a relaxor ferroelectric near the morphotropic phase boundary

Kitaev interactions in the Co honeycomb antiferromagnets Na3​Co2​SbO6​ and Na2​Co2​TeO6​

Structure and Magnetism in the Bond Frustrated Spinel, ZnCr2Se4

A reassessment of the Burns temperature and its relationship to the diffuse scattering, lattice dynamics, and thermal expansion in the relaxor PMN

Interplay between static and dynamic polar correlations in relaxor Pb(Mg_{1/3}Nb_{2/3})O_{3}

Neutron inelastic scattering measurements of low energy phonons in the multiferroic BiFeO3

Ground State of Relaxor Ferroelectric Pb(Zn1/3​Nb2/3​)O3​

Neutron diffraction in MnSb2O6: Magnetic and structural domains in a helicoidal polar magnet with coupled chiralities

Spin-Orbit Excitons in CoO

Probing high-energy electronic excitations using inelastic neutron scattering

Anisotropic critical magnetic fluctuations in the ferromagnetic superconductor UCoGe

Molecular orientational melting within a lead-halide octahedra framework - the order-disorder transition in CH3NH3PbBr3

Interstitial Iron Controlled Superconductivity in Fe1+xTe0.7Se0.3

Spin resonance in the d-wave superconductor CeCoIn5

Lifetime-shortened acoustic phonons and static order at the Brillouin zone boundary in the organic-inorganic perovskite CH3​NH3​PbCl3​

Response of polar nanoregions in 68%Pb(Mg1/3Nb2/3)O3-32%PbTiO3 to a [001] electric field

Crystal field excitations and magnons: their roles in oxyselenides Pr2O2M2OSe2 (M = Mn, Fe)

Helical spin-waves, magnetic order, and fluctuations in the langasite compound Ba3NbFe3Si2O14

Magnetic surface reconstruction in the van-der-Waals antiferromagnet Fe1+x​Te

The magnetic and structural properties near the Lifshitz point in Fe1+xTe

Anisotropic excitonic magnetism from discrete C4​ symmetry in CeRhIn5​

Neutron scattering study of a quasi-2D spin-1/2 dimer system Piperazinium Hexachlorodicuprate under hydrostatic pressure

Magnetic field resonantly enhanced free spins in underdoped YBa2​Cu3​O6+x​

Separation of magnetic and superconducting behaviour in YBCO6.33 (Tc=8.4 K)

Solitary magnons in the S=25​ antiferromagnet CaFe2​O4​

Van Vleck excitons in Ca2​RuO4​

Dynamic Stripes and Resonance in the Superconducting and Normal Phases of YBa2Cu3O6.5 Ortho-II Superconductor

Neutron Scattering Evidence for a Periodically-Modulated Superconducting Phase in the Underdoped Cuprate La1.905​Ba0.095​CuO4​

Decoupled molecular and inorganic framework dynamics in CH3​NH3​PbCl3​

Spontaneous decay of a soft optical phonon in the relaxor ferroelectric PbMg1/3​Nb2/3​O3​

Magnetoelastic dynamics of the "spin Jahn-Teller" transition in CoTi2​O5​

Determination of spin and orbital magnetization in the ferromagnetic superconductor UCoGe

Absence of moment fragmentation in the mixed B-site pyrochlore Nd2​GaSbO7​

Universal Static and Dynamic Properties of the Structural Transition in Pb(Zn1/3Nb2/3)O3

Spin reorientations in structurally metastable, disordered, and hexagonal Cr7Te8

Evidence for the Confinement of Magnetic Monopoles in Quantum Spin Ice

Incommensurate short-range order in the S=1 triangular antiferromagnet NiGa2S4

Transverse acoustic phonon anomalies at intermediate wavevectors in MgV2​O4​

Excitations in the quantum paramagnetic phase of the quasi-one-dimensional Ising magnet CoNb2​O6​ in a transverse field: Geometric frustration and quantum renormalization effects

The effect of local dipole moments on the structure and lattice dynamics of K0.98Li0.02TaO3

Competing spin density wave, collinear, and helical magnetism in Fe1+xTe

Zeeman split Kramers doublets in spin-supersolid candidate Na2​BaCo(PO4​)2​

Disentangling orbital and spin exchange interactions for Co2+ on a rocksalt lattice

Acoustic lattice instabilities at the magneto-structural transition in Fe1.057(7)​Te

Superconductivity and fractionalized magnetic excitations in CeCoIn5

Soft phonon columns on the edge of the Brillouin zone in the relaxor PbMg1/3Nb2/3O3

Magnetic field tuned superconducting and normal phase magnetism in CeCo0.5​Rh0.5​In5​

Evidence for anisotropic polar nanoregions in relaxor PMN: A neutron study of the elastic constants and anomalous TA phonon damping

Spin dynamics near the critical doping in weakly-superconducting underdoped YBa2Cu3O6.35 (Tc=18K)

Imitation of spin density wave order in Cu3​Nb2​O8​

Direct observation of the near-surface layer in Pb(Mg1/3​Nb2/3​)O3​ using neutron diffraction

An Anomalous Phase in the Relaxor Ferroelectric Pb(Zn1/3​Nb2/3​)O3​

Magnetic Fluctuations and the Spin-Orbit Interaction in Mott Insulating CoO

High energy neutron scattering from hydrogen using a direct geometry spectrometer

From Ising resonant fluctuations to static uniaxial order in antiferromagnetic and weakly superconducting CeCo(In1−x​Hgx​)5​ (x=0.01)

From incommensurate correlations to mesoscopic spin resonance in YbRh2Si2

From one- to two-magnon excitations in the S=3/2 magnet I^2-CaCr2​O4​

Alignment facility and software for single crystal time of flight neutron spectroscopy

Quantum phase transitions in magnetism and superconductivity: emergent spin topology seen with neutrons

Orbital ordering promotes weakly-interacting S=1/2 dimers in the triangular lattice compound Sr3Cr2O8

Enhancement of magnetic order in the incommensurate phase of Mg-doped CuGeO3​

Phase instability induced by polar nanoregions in a relaxor ferroelectric system

Soft striped magnetic fluctuations competing with superconductivity in Fe_{1+x}Te

Anharmonic magnon excitations in noncollinear and charge-ordered RbFe2+Fe3+F6​

A two-component model of the neutron diffuse scattering in the relaxor ferroelectric PZN-4.5%PT

Weak spin interactions in Mott insulating La2O2Fe2OSe2

Magnetic neutron scattering in hole doped cuprate superconductors

Orphan spins and bound in-gap states in the S=25​ antiferromagnet CaFe2​O4​

Depth dependant element analysis of PbMg1/3​Nb2/3​O3​ using muonic X-rays

The role of random electric fields in relaxors

One-dimensional magnetic fluctuations in the spin-2 triangular lattice Î±-NaMnO2

From mean-field localized magnetism to itinerant spin fluctuations in the "Non-metallic metal" - FeCrAs

The effect of the pseudogap on suppressing high energy inelastic neutron scattering in superconducting YBa2Cu3O6.5

Neutron scattering measurements of dd and spin-orbit excitations below the Mott-Hubbard gap in CoO

Non-collinear spin-density wave antiferromagnetism in FeAs

(C $_{4}$ H $_{12}$ N $_{2}$ )[CoCl $_{4}$ ] -tetrahedrally coordinated Co $^{2 +}$ without the orbital degeneracy

Spin-wave directional anisotropies in antiferromagnetic Ba $_{3}$ NbFe $_{3}$ Si $_{2}$ O $_{14}$

Kitaev interactions in the Co honeycomb antiferromagnets Na $_{3}$ Co $_{2}$ SbO $_{6}$ and Na $_{2}$ Co $_{2}$ TeO $_{6}$

Ground State of Relaxor Ferroelectric $P b (Z n_{1/3} N b_{2/3}) O_{3}$

Lifetime-shortened acoustic phonons and static order at the Brillouin zone boundary in the organic-inorganic perovskite CH $_{3}$ NH $_{3}$ PbCl $_{3}$

Magnetic surface reconstruction in the van-der-Waals antiferromagnet Fe $_{1 + x}$ Te

Anisotropic excitonic magnetism from discrete $C_{4}$ symmetry in CeRhIn $_{5}$

Magnetic field resonantly enhanced free spins in underdoped YBa $_{2}$ Cu $_{3}$ O $_{6 + x}$

Solitary magnons in the $S = \frac{5}{2}$ antiferromagnet CaFe $_{2}$ O $_{4}$

Van Vleck excitons in Ca $_{2}$ RuO $_{4}$

Neutron Scattering Evidence for a Periodically-Modulated Superconducting Phase in the Underdoped Cuprate La $_{1.905}$ Ba $_{0.095}$ CuO $_{4}$

Decoupled molecular and inorganic framework dynamics in CH $_{3}$ NH $_{3}$ PbCl $_{3}$

Spontaneous decay of a soft optical phonon in the relaxor ferroelectric PbMg $_{1/3}$ Nb $_{2/3}$ O $_{3}$

Magnetoelastic dynamics of the "spin Jahn-Teller" transition in CoTi $_{2}$ O $_{5}$

Absence of moment fragmentation in the mixed $B$ -site pyrochlore Nd $_{2}$ GaSbO $_{7}$

Transverse acoustic phonon anomalies at intermediate wavevectors in MgV $_{2}$ O $_{4}$

Excitations in the quantum paramagnetic phase of the quasi-one-dimensional Ising magnet CoNb $_{2}$ O $_{6}$ in a transverse field: Geometric frustration and quantum renormalization effects

Zeeman split Kramers doublets in spin-supersolid candidate Na $_{2}$ BaCo(PO $_{4}$ ) $_{2}$

Disentangling orbital and spin exchange interactions for Co $^{2 +}$ on a rocksalt lattice

Acoustic lattice instabilities at the magneto-structural transition in Fe $_{1.057 (7)}$ Te

Magnetic field tuned superconducting and normal phase magnetism in CeCo $_{0.5}$ Rh $_{0.5}$ In $_{5}$

Imitation of spin density wave order in Cu $_{3}$ Nb $_{2}$ O $_{8}$

Direct observation of the near-surface layer in Pb(Mg $_{1/3}$ Nb $_{2/3}$ )O $_{3}$ using neutron diffraction

An Anomalous Phase in the Relaxor Ferroelectric Pb(Zn $_{1/3}$ Nb $_{2/3}$ )O $_{3}$

From Ising resonant fluctuations to static uniaxial order in antiferromagnetic and weakly superconducting CeCo(In $_{1 - x}$ Hg $_{x}$ ) $_{5}$ ( $x$ =0.01)

From one- to two-magnon excitations in the S=3/2 magnet $I^^{2}$ -CaCr $_{2}$ O $_{4}$

Enhancement of magnetic order in the incommensurate phase of Mg-doped CuGeO $_{3}$

Anharmonic magnon excitations in noncollinear and charge-ordered RbFe $^{2 +}$ Fe $^{3 +}$ F $_{6}$

Orphan spins and bound in-gap states in the $S = \frac{5}{2}$ antiferromagnet CaFe $_{2}$ O $_{4}$

Depth dependant element analysis of PbMg $_{1/3}$ Nb $_{2/3}$ O $_{3}$ using muonic X-rays

Neutron scattering measurements of $dd$ and spin-orbit excitations below the Mott-Hubbard gap in CoO

Unstable Spin-Ice Order in the Stuffed Metallic Pyrochlore Pr $_{2 + x}$ Ir $_{2 - x}$ O $_{7 - I^´}$

Magnetism of the Fe $^{2 +}$ and Ce $^{3 +}$ sublattices in Ce $_{2}$ O $_{2}$ FeSe $_{2}$ : a combined neutron powder diffraction, inelastic neutron scattering and density functional study

Metastable antiphase boundary ordering in CaFe $_{2}$ O $_{4}$

Orbital character of the spin-reorientation transition in TbMn $_{6}$ Sn $_{6}$

Relaxing Kondo screened Kramers-doublets in CeRhSi $_{3}$

Excitonic transverse and amplitude fluctuations in the noncollinear and charge-ordered RbFe $^{2 +}$ Fe $^{3 +}$ F $_{6}$

From soft harmonic phonons to fast relaxational dynamics in CH $_{3}$ NH $_{3}$ PbBr $_{3}$

Fluctuating defects in the incipient relaxor K $_{1 - x}$ Li $_{x}$ TaO $_{3}$ (x=0.02)

Two-dimensional ferromagnetic spin-orbital excitations in the honeycomb VI $_{3}$

Ordered magnetism in the intrinsically decorated $j_{eff}$ = $\frac{1}{2}$ $I^\pm$ -CoV $_{3}$ O $_{8}$

Spin-orbit transitions in $I^\pm$ and $I^^{3}$ -CoV $_{2}$ O $_{6}$