Magnetic excitations in the orbitally degenerate triangular lattice LiVO2

W. Tian; M. B. Stone; D. G. Mandrus; B. C. Sales; R. Jin; D. T. Adroja; S. E. Nagler

doi:10.1016/j.physb.2006.05.099

Magnetic excitations in the orbitally degenerate triangular lattice LiVO₂

W. Tian, M. B. Stone, D. G. Mandrus, B. C. Sales, R. Jin, D. T. Adroja, S. E. Nagler

Direct Geometry

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Abstract

We report an inelastic-neutron scattering study of the magnetic excitations in LiVO₂, a two-dimensional triangular lattice of V³⁺ (S=1) ions with orbital ordering involving threefold degenerate t_2g orbitals. At temperatures well below the phase transition temperature T_t≈500 K, an excitation at ∼58 meV is observed which we identify as a candidate for the principal singlet-to-triplet magnetic transition. Additional excitations are also observed at lower and higher energies. Our results suggest that orbital degeneracy plays an important role in understanding the unusual magnetic properties of LiVO₂.

Original language	English
Pages (from-to)	50-52
Number of pages	3
Journal	Physica B: Physics of Condensed Matter
Volume	385-386 I
DOIs	https://doi.org/10.1016/j.physb.2006.05.099
State	Published - Nov 27 2006

Keywords

Orbital ordering
Transition metal antiferromagnet
Two-dimensional triangular lattice

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10.1016/j.physb.2006.05.099

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title = "Magnetic excitations in the orbitally degenerate triangular lattice LiVO2",

abstract = "We report an inelastic-neutron scattering study of the magnetic excitations in LiVO2, a two-dimensional triangular lattice of V3+ (S=1) ions with orbital ordering involving threefold degenerate t2g orbitals. At temperatures well below the phase transition temperature Tt≈500 K, an excitation at ∼58 meV is observed which we identify as a candidate for the principal singlet-to-triplet magnetic transition. Additional excitations are also observed at lower and higher energies. Our results suggest that orbital degeneracy plays an important role in understanding the unusual magnetic properties of LiVO2.",

keywords = "Orbital ordering, Transition metal antiferromagnet, Two-dimensional triangular lattice",

author = "W. Tian and Stone, {M. B.} and Mandrus, {D. G.} and Sales, {B. C.} and R. Jin and Adroja, {D. T.} and Nagler, {S. E.}",

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T1 - Magnetic excitations in the orbitally degenerate triangular lattice LiVO2

AU - Tian, W.

AU - Stone, M. B.

AU - Mandrus, D. G.

AU - Sales, B. C.

AU - Jin, R.

AU - Adroja, D. T.

AU - Nagler, S. E.

PY - 2006/11/27

Y1 - 2006/11/27

N2 - We report an inelastic-neutron scattering study of the magnetic excitations in LiVO2, a two-dimensional triangular lattice of V3+ (S=1) ions with orbital ordering involving threefold degenerate t2g orbitals. At temperatures well below the phase transition temperature Tt≈500 K, an excitation at ∼58 meV is observed which we identify as a candidate for the principal singlet-to-triplet magnetic transition. Additional excitations are also observed at lower and higher energies. Our results suggest that orbital degeneracy plays an important role in understanding the unusual magnetic properties of LiVO2.

AB - We report an inelastic-neutron scattering study of the magnetic excitations in LiVO2, a two-dimensional triangular lattice of V3+ (S=1) ions with orbital ordering involving threefold degenerate t2g orbitals. At temperatures well below the phase transition temperature Tt≈500 K, an excitation at ∼58 meV is observed which we identify as a candidate for the principal singlet-to-triplet magnetic transition. Additional excitations are also observed at lower and higher energies. Our results suggest that orbital degeneracy plays an important role in understanding the unusual magnetic properties of LiVO2.

KW - Orbital ordering

KW - Transition metal antiferromagnet

KW - Two-dimensional triangular lattice

UR - http://www.scopus.com/inward/record.url?scp=33751404802&partnerID=8YFLogxK

U2 - 10.1016/j.physb.2006.05.099

DO - 10.1016/j.physb.2006.05.099

M3 - Article

AN - SCOPUS:33751404802

SN - 0921-4526

VL - 385-386 I

SP - 50

EP - 52

JO - Physica B: Physics of Condensed Matter

JF - Physica B: Physics of Condensed Matter

ER -

Magnetic excitations in the orbitally degenerate triangular lattice LiVO₂

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Keywords

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