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Low-energy Vt2 gorbital excitations in NdVO3
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Laverock, J., Cheng, B., Preston, A. R. H., Newby, D., Piper, L. F. J., Tung, L. D., Balakrishnan, Geetha, Glans, P. -A., Guo, J. -H. and Smith, K. E. (2014) Low-energy Vt2 gorbital excitations in NdVO3. Journal of Physics : Condensed Matter, Volume 26 (Number 45). Article number 455603. doi:10.1088/0953-8984/26/45/455603
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Official URL: http://dx.doi.org/10.1088/0953-8984/26/45/455603
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.
| Item Type: | Journal Article | ||||||||
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| Divisions: | Faculty of Science > Physics | ||||||||
| Journal or Publication Title: | Journal of Physics : Condensed Matter | ||||||||
| Publisher: | IOP Publishing | ||||||||
| ISSN: | 0953-8984 | ||||||||
| Official Date: | November 2014 | ||||||||
| Dates: |
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| Volume: | Volume 26 | ||||||||
| Number: | Number 45 | ||||||||
| Article Number: | Article number 455603 | ||||||||
| DOI: | 10.1088/0953-8984/26/45/455603 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published |
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