M. Songvilay

activity

20142024

α

-RuCl

_{3}

: a honeycomb lattice quantum magnet with strong spin-orbit coupling

494 citations · 913 across the 24 of their papers we have counts for

collaborators

24 papers

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.str-el2024★ 2 cited

Quasimolecular electronic structure of the trimer iridate Ba $_{4}$ NbIr $_{3}$ O $_{12}$

M. Magnaterra, A. Sandberg, H. Schilling +17

The insulating mixed-valent Ir $^{+ 3.66}$ compound Ba $_{4}$ NbIr $_{3}$ O $_{12}$ hosts two holes per Ir $_{3}$ O $_{12}$ trimer unit. We address the electronic structure via resonant inelastic…

cond-mat.str-el2024★ 4 cited

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.mtrl-sci2023★ 6 cited

Lattice dynamics and spin excitations in the metal-organic framework [CH $_{3}$ NH $_{3}$ ][Co(HCOO) $_{3}$ ]

Lei Ding, Claire V. Colin, Virginie Simonet +11

In metal-organic-framework (MOF) perovskites, both magnetic and ferroelectric orderings can be readily realized by compounding spin and charge degrees of freedom. The hydrogen bond…

cond-mat.str-el2023★ 4 cited

Neutron scattering sum rules, symmetric exchanges, and helicoidal magnetism in MnSb $_{2}$ O $_{6}$

E. Chan, H. Lane, J. Pásztorová +9

MnSb $_{2}$ O $_{6}$ is based on the noncentrosymmetric $P 321$ space group with magnetic Mn $^{2 +}$ ( $S = 5/2$ , $L \approx 0$ ) spins ordering below $T_{N} = 12$ K in a helicoidal…

cond-mat.str-el2022★ 7 cited

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

E. Chan, J. Pásztorová, 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-el2022★ 5 cited

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-sci2021★ 2 cited

Large dynamic scissoring mode displacements coupled to band gap opening in Hybrid Perovskites

Tobias A. Bird, Jungshen Chen, Manila Songvilay +4

Hybrid perovskites are a rapidly growing research area, having reached photovoltaic power conversion efficiencies of over 25 \%. We apply a symmetry-motivated analysis method to an…

cond-mat.str-el2021★ 18 cited

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-el2021★ 9 cited

From one- to two-magnon excitations in the S=3/2 magnet $β$ -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 $β$ -CaCr $_{2}$ O $_{4}$ (T $_{N}$ =21 K). The low-energy fluctuations, in the ordered state, resemble large…

cond-mat.str-el2021★ 149 cited

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-el2021★ 8 cited

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-el2020★ 7 cited

Metastable and localized Ising magnetism in $α$ -CoV $_{2}$ O $_{6}$ magnetization plateaus

L. Edwards, H. Lane, A. M. Arevalo-Lopez +10

$α$ -CoV $_{2}$ O $_{6}$ consists of $j_{eff} = \frac{1}{2}$ Ising spins located on an anisotropic triangular motif with magnetization plateaus in an applied field. We combine n…

cond-mat.mtrl-sci2020★ 5 cited

Broadband critical dynamics in disordered lead-based perovskites

C. Stock, M. Songvilay, P. M. Gehring +2

Materials based on the cubic perovskite unit cell continue to provide the basis for technologically important materials with two notable recent examples being lead-based relaxor pi…

cond-mat.mtrl-sci2019★ 26 cited

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-sci2019★ 7 cited

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-sci2019★ 35 cited

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-el2019★ 38 cited

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-el2019★ 11 cited

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

J. Pásztorová, 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.str-el2018★ 18 cited

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

P. M. Sarte, A. A. Arévalo-López, M. Songvilay +11

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

cond-mat.mtrl-sci2018★ 18 cited

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.str-el2018★ 25 cited

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-el2018★ 15 cited

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.str-el2014★ 494 cited

Magnetic order in $α$ -RuCl $_{3}$ : a honeycomb lattice quantum magnet with strong spin-orbit coupling

J. A. Sears, M. Songvilay, K. W. Plumb +5

We report magnetic and thermodynamic properties of single crystal $α$ -RuCl $_{3}$ , in which the Ru $^{3 +}$ ( $4 d^{5}$ ) ion is in its low spin state and forms a honeycomb lattice. Two feat…

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

Quasimolecular electronic structure of the trimer iridate Ba4​NbIr3​O12​

Anisotropic excitonic magnetism from discrete C4​ symmetry in CeRhIn5​

Lattice dynamics and spin excitations in the metal-organic framework [CH3​NH3​][Co(HCOO)3​]

Neutron scattering sum rules, symmetric exchanges, and helicoidal magnetism in MnSb2​O6​

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

Excitonic transverse and amplitude fluctuations in the noncollinear and charge-ordered RbFe2+Fe3+F6​

Large dynamic scissoring mode displacements coupled to band gap opening in Hybrid Perovskites

Two-dimensional ferromagnetic spin-orbital excitations in the honeycomb VI3​

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

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

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

Metastable and localized Ising magnetism in α-CoV2​O6​ magnetization plateaus