318 citations · 7.3k across the 177 of their papers we have counts for
27 papers · 1 filter
On the magnetic structures of 1:1:1 stoichiometric topological phases LnSbTe (Ln = Pr, Nd, Dy and Er)
Igor Plokhikh, Vladimir Pomjakushin, Dariusz Jakub Gawryluk +2
LnSbTe (Ln - lanthanide) group of materials, belonging to ZrSiS/PbFCl (P4/nmm) structure type, is a platform to study the phenomena originating from the interplay between the elect…
Structural disorder and magnetic correlations driven by oxygen doping in Nd2NiO4+d (d ~ 0.11)
Sumit Ranjan Maity, Monica Ceretti, Lukas Keller +7
We investigated the influence of oxygen over-stoichiometry on apical oxygen disorder and magnetic correlations in Nd2NiO4+d (d~0.11) in the temperature range of 2-300 K by means of…
Local control of improper ferroelectric domains in YMnO
Lukas Kuerten, Stephan Krohns, Peggy Schoenherr +6
Improper ferroelectrics are described by two order parameters: a primary one, driving a transition to long-range distortive, magnetic or otherwise non-electric order, and the elect…
Anisotropic character of the metal-to-metal transition in Pr4NiO
Shangxiong Huangfu, Gawryluk Dariusz Jakub, Xiaofu Zhang +5
As a member of the Ruddlesden-Popper LnNiO series rare-earth-nickelates, the Pr4NiO consists of infinite quasi-two-dimensional perovskite-like Ni-O…
Development of the magnetism in the solid solution of the candidate Weyl semimetals CePrAlGe
Pascal Puphal, Sarah Krebber, Emmanuelle Suard +6
We investigate the macroscopic and microscopic physical properties of the solid solution of CePrAlGe. The series tunes from CeAlGe with its multi- structure…
Floating Zone Growth of Sr Substituted Han Purple: BaSrCuSiO
Pascal Puphal, Stephan Allenspach, Christian Rüegg +1
We present a route to grow single crystals of BaSrCuSiO suitable for inelastic neutron studies via the floating zone technique. Neutron single crystal d…
Bulk single crystal growth of the theoretically predicted magnetic Weyl semimetals AlGe ( = Pr, Ce)
P. Puphal, C. Mielke, N. Kumar +5
We explore two methods for single crystal growth of the theoretically proposed magnetic Weyl semimetals AlGe ( = Pr,Ce), which prove that a floating zone technique, being bot…
Tunable Berry Curvature Through Magnetic Phase Competition in a Topological Kagome Magnet
Z. Guguchia, J. Verezhak, D. Gawryluk +19
Magnetic topological phases of quantum matter are an emerging frontier in physics and material science. Along these lines, several kagome magnets have appeared as the most promisin…
Laue three dimensional neutron diffraction
Marc Raventós, Michael Tovar, Marisa Medarde +6
This article presents a measurement technique and data analysis tool to perform 3D grain distribution mapping and indexing of oligocrystalline samples using neutrons: Laue three-di…
Spin Triplet Ground-State in the Copper Hexamer Compounds A2Cu3O(SO4)3 (A=Na,K)
A. Furrer, A. Podlesnyak, E. Pomjakushina +1
The compounds A2Cu3O(SO4)3 (A=Na,K) are characterized by copper hexamers which are weakly coupled along the b-axis to realize one-dimensional antiferromagnetic chains below TN=3 K,…
Design of magnetic spirals in layered perovskites: extending the stability range far beyond room temperature
Tian Shang, Emmanuel Canévet, Mickaël Morin +4
In insulating materials with ordered magnetic spiral phases, ferroelectricity can emerge due to the breaking of inversion symmetry. This property is of both fundamental and practic…
Trivial topological phase of CaAgP and the topological nodal-line transition in CaAg(P1-xAsx)
N. Xu, Y. T. Qian, Q. S. Wu +14
By performing angle-resolved photoemission spectroscopy and first-principles calculations, we address the topological phase of CaAgP and investigate the topological phase transitio…
Revisiting the Magnetic Structure and Charge Ordering in LaSrFeO by Neutron Powder Diffraction and Mössbauer Spectroscopy
F. Li, V. Pomjakushin, T. Mazet +7
The magnetic ordering of LaSrFeO perovskite has been studied by neutron powder diffraction and Fe Mössbauer spectroscopy down to 2 K. From symmetry analy…
Scavenging of oxygen vacancies at modulation-doped oxide interfaces: Evidence from oxygen isotope tracing
Y. Z. Chen, M. Döbeli, E. Pomjakushina +3
The introduction of manganite buffer layers, La7/8Sr1/8MnO3 (LSMO) in particular, at the metallic interface between SrTiO3 (STO) and another band insulator suppresses the carrier d…
Effect of Sr doping on the magnetic exchange interactions in manganites
A. Furrer, A. Podlesnyak, E. Pomjakushina +1
Strontium doping transforms manganites of type La(1-x)Sr(x)MnO(3) from an insulating antiferromagnet (x=0) to a metallic ferromagnet (x>0.16) due to the induced charge carriers (ho…
Crystal field parameters of the rare earth pyrochlores TiO ( = Tb, Dy, Ho)
M Ruminy, E Pomjakushina, K Iida +4
In this work we present inelastic neutron scattering experiments which probe the single ion ground states of the rare earth pyrochlores TiO ( = Tb, Dy, Ho). DyT…
Discovery of Weyl semimetal state violating Lorentz invariance in MoTe2
N. Xu, Z. J. Wang, A. P. Weber +16
A new type of Weyl semimetal state, in which the energy values of Weyl nodes are not the local extrema, has been theoretically proposed recently, namely type II Weyl semimetal. Dis…
First principles calculation and experimental investigation of lattice dynamics in the rare earth pyrochlores R2Ti2O7 (R=Tb, Dy, Ho)
M Ruminy, M Nunez Valdez, B Wehinger +15
We present a model of the lattice dynamics of the rare earth titanate pyrochlores R2Ti2O7 (R=Tb, Dy, Ho), which are important materials in the study of frustrated magnetism. The ph…
New synthesis route and magnetic structure of Tm2Mn2O7 - pyrochlore
Ekaterina Pomjakushina, Vladimir Pomjakushin, Katharina Rolfs +2
In this work we present a new chemical route to synthesize Tm2Mn2O7 pyrochlore, a compound which is thermodynamically unstable at ambient pressure. Differently from the reported in…
Observation of Weyl nodes and Fermi arcs in TaP
N. Xu, H. M. Weng, B. Q. Lv +18
A Weyl semimetal possesses spin-polarized band-crossings, called Weyl nodes, connected by topological surface arcs. The low-energy excitations near the crossing points behave the s…
Spin-Polarized Quantum Well States on BiFeSe
Michael M. Yee, Z. -H. Zhu, Anjan Soumyanarayanan +8
Low temperature scanning tunneling microscopy is used to image the doped topological insulator BiFeSe. Interstitial Fe defects allow the detection of quasiparticle…
Inelastic neutron scattering studies of YFeO
S. E. Hahn, A. A. Podlesnyak, R. S. Fishman +5
Spin waves in the the rare earth orthorferrite YFeO have been studied by inelastic neutron scattering and analyzed with a full four-sublattice model including contributions fro…
Interplay of the electronic and lattice degrees of freedom in A_{1-x}Fe_{2-y}Se_{2} superconductors under pressure
M. Bendele, C. Marini, B. Joseph +12
The local structure and electronic properties of RbFeSe are investigated by means of site selective polarized x-ray absorption spectroscopy at the iron and sele…
Phase co-existence and structured diffuse scattering seen by X-ray 3D mapping of reciprocal space for Cs0.8Fe1.6Se2
A. Bosak, V. Svitlyk, A. Krzton-Maziopa +6
AxFe2-ySe2 (A=K, Rb, Cs) superconductors may show a complex mixture of structural phases even in a single crystal form. A full sphere of the diffraction intensity has been collecte…