Low-energy V t2g orbital excitations in NdVO3

J. Laverock; B. Chen; A. R.H. Preston; D. Newby; L. F.J. Piper; L. D. Tung; G. Balakrishnan; P. A. Glans; J. H. Guo; K. E. Smith

doi:10.1088/0953-8984/26/45/455603

Low-energy V t_2g orbital excitations in NdVO₃

J. Laverock
, B. Chen
, A. R.H. Preston
, D. Newby
, L. F.J. Piper
, L. D. Tung
, G. Balakrishnan
, P. A. Glans
, J. H. Guo
, K. E. Smith

Pathology

Boston University
State University of New York Binghamton University
University of Warwick
University College London
Lawrence Berkeley National Laboratory
The University of Auckland

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

The electronic structure of NdVO₃ and YVO₃ has been investigated as a function of sample temperature using resonant inelastic soft x-ray scattering at the V L₃-edge. Most of the observed spectral features are in good agreement with an atomic crystal-field multiplet model. However, a low energy feature is observed at ∼0.4 eV that cannot be explained by crystal-field arguments. The resonant behaviour of this feature establishes it as due to excitations of the V t_2g states. Moreover, this feature exhibits a strong sample temperature dependence, reaching maximum intensity in the orbitally-ordered phase of NdVO₃, before becoming suppressed at low temperatures. This behaviour indicates that the origin of this feature is a collective orbital excitation, i.e. the bi-orbiton.

Original language	English
Article number	455603
Journal	Journal of Physics Condensed Matter
Volume	26
Issue number	45
DOIs	https://doi.org/10.1088/0953-8984/26/45/455603
State	Published - Nov 12 2014

Keywords

crystal field excitations
orbital excitations
resonant inelastic x-ray scattering

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10.1088/0953-8984/26/45/455603

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@article{92e3582feaa0409b81c47cc298c04e00,

title = "Low-energy V t2g orbital excitations in NdVO3",

abstract = "The electronic structure of NdVO3 and YVO3 has been investigated as a function of sample temperature using resonant inelastic soft x-ray scattering at the V L3-edge. Most of the observed spectral features are in good agreement with an atomic crystal-field multiplet model. However, a low energy feature is observed at ∼0.4 eV that cannot be explained by crystal-field arguments. The resonant behaviour of this feature establishes it as due to excitations of the V t2g states. Moreover, this feature exhibits a strong sample temperature dependence, reaching maximum intensity in the orbitally-ordered phase of NdVO3, before becoming suppressed at low temperatures. This behaviour indicates that the origin of this feature is a collective orbital excitation, i.e. the bi-orbiton.",

keywords = "crystal field excitations, orbital excitations, resonant inelastic x-ray scattering",

author = "J. Laverock and B. Chen and Preston, \{A. R.H.\} and D. Newby and Piper, \{L. F.J.\} and Tung, \{L. D.\} and G. Balakrishnan and Glans, \{P. A.\} and Guo, \{J. H.\} and Smith, \{K. E.\}",

note = "Publisher Copyright: {\textcopyright} 2014 IOP Publishing Ltd.",

year = "2014",

month = nov,

day = "12",

doi = "10.1088/0953-8984/26/45/455603",

language = "English",

volume = "26",

journal = "Journal of Physics Condensed Matter",

issn = "0953-8984",

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TY - JOUR

T1 - Low-energy V t2g orbital excitations in NdVO3

AU - Laverock, J.

AU - Chen, B.

AU - Preston, A. R.H.

AU - Newby, D.

AU - Piper, L. F.J.

AU - Tung, L. D.

AU - Balakrishnan, G.

AU - Glans, P. A.

AU - Guo, J. H.

AU - Smith, K. E.

PY - 2014/11/12

Y1 - 2014/11/12

N2 - The electronic structure of NdVO3 and YVO3 has been investigated as a function of sample temperature using resonant inelastic soft x-ray scattering at the V L3-edge. Most of the observed spectral features are in good agreement with an atomic crystal-field multiplet model. However, a low energy feature is observed at ∼0.4 eV that cannot be explained by crystal-field arguments. The resonant behaviour of this feature establishes it as due to excitations of the V t2g states. Moreover, this feature exhibits a strong sample temperature dependence, reaching maximum intensity in the orbitally-ordered phase of NdVO3, before becoming suppressed at low temperatures. This behaviour indicates that the origin of this feature is a collective orbital excitation, i.e. the bi-orbiton.

AB - The electronic structure of NdVO3 and YVO3 has been investigated as a function of sample temperature using resonant inelastic soft x-ray scattering at the V L3-edge. Most of the observed spectral features are in good agreement with an atomic crystal-field multiplet model. However, a low energy feature is observed at ∼0.4 eV that cannot be explained by crystal-field arguments. The resonant behaviour of this feature establishes it as due to excitations of the V t2g states. Moreover, this feature exhibits a strong sample temperature dependence, reaching maximum intensity in the orbitally-ordered phase of NdVO3, before becoming suppressed at low temperatures. This behaviour indicates that the origin of this feature is a collective orbital excitation, i.e. the bi-orbiton.

KW - crystal field excitations

KW - orbital excitations

KW - resonant inelastic x-ray scattering

UR - https://www.scopus.com/pages/publications/84908304766

U2 - 10.1088/0953-8984/26/45/455603

DO - 10.1088/0953-8984/26/45/455603

M3 - Article

AN - SCOPUS:84908304766

SN - 0953-8984

VL - 26

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 45

M1 - 455603

ER -

Low-energy V t_2g orbital excitations in NdVO₃

Abstract

Keywords

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