Strain dependence of bonding and hybridization across the metal-insulator transition of VO 2

J. Laverock; L. F J Piper; A. R H Preston; B. Chen; J. McNulty; K. E. Smith; S. Kittiwatanakul; J. W. Lu; S. A. Wolf; P. A. Glans; J. H. Guo

doi:10.1103/PhysRevB.85.081104

Strain dependence of bonding and hybridization across the metal-insulator transition of VO 2

J. Laverock^*, L. F J Piper, A. R H Preston, B. Chen, J. McNulty, K. E. Smith, S. Kittiwatanakul, J. W. Lu, S. A. Wolf, P. A. Glans, J. H. Guo

^*Corresponding author for this work

School of Physics

Research output: Contribution to journal › Article (Academic Journal)

25 Citations (Scopus)

Abstract

Soft x-ray spectroscopy is used to investigate the strain dependence of the metal-insulator transition of VO ₂. Changes in the strength of the V3d-O2p hybridization are observed across the transition and are linked to the structural distortion. Furthermore, although the V-V dimerization is well described by dynamical mean-field theory, the V-O hybridization is found to have an unexpectedly strong dependence on strain that is not predicted by band theory, emphasizing the relevance of the O ion to the physics of VO ₂.

Original language	English
Article number	081104
Journal	Physical Review B: Condensed Matter and Materials Physics
Volume	85
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevB.85.081104
Publication status	Published - 10 Feb 2012

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Laverock, J., Piper, L. F. J., Preston, A. R. H., Chen, B., McNulty, J., Smith, K. E., Kittiwatanakul, S., Lu, J. W., Wolf, S. A., Glans, P. A., & Guo, J. H. (2012). Strain dependence of bonding and hybridization across the metal-insulator transition of VO 2. Physical Review B: Condensed Matter and Materials Physics, 85(8), [081104]. https://doi.org/10.1103/PhysRevB.85.081104

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abstract = "Soft x-ray spectroscopy is used to investigate the strain dependence of the metal-insulator transition of VO 2. Changes in the strength of the V3d-O2p hybridization are observed across the transition and are linked to the structural distortion. Furthermore, although the V-V dimerization is well described by dynamical mean-field theory, the V-O hybridization is found to have an unexpectedly strong dependence on strain that is not predicted by band theory, emphasizing the relevance of the O ion to the physics of VO 2.",

author = "J. Laverock and Piper, {L. F J} and Preston, {A. R H} and B. Chen and J. McNulty and Smith, {K. E.} and S. Kittiwatanakul and Lu, {J. W.} and Wolf, {S. A.} and Glans, {P. A.} and Guo, {J. H.}",

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Strain dependence of bonding and hybridization across the metal-insulator transition of VO 2. / Laverock, J.; Piper, L. F J; Preston, A. R H; Chen, B.; McNulty, J.; Smith, K. E.; Kittiwatanakul, S.; Lu, J. W.; Wolf, S. A.; Glans, P. A.; Guo, J. H.

In: Physical Review B: Condensed Matter and Materials Physics, Vol. 85, No. 8, 081104, 10.02.2012.

Research output: Contribution to journal › Article (Academic Journal)

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AU - Laverock, J.

AU - Piper, L. F J

AU - Preston, A. R H

AU - Chen, B.

AU - McNulty, J.

AU - Smith, K. E.

AU - Kittiwatanakul, S.

AU - Lu, J. W.

AU - Wolf, S. A.

AU - Glans, P. A.

AU - Guo, J. H.

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AB - Soft x-ray spectroscopy is used to investigate the strain dependence of the metal-insulator transition of VO 2. Changes in the strength of the V3d-O2p hybridization are observed across the transition and are linked to the structural distortion. Furthermore, although the V-V dimerization is well described by dynamical mean-field theory, the V-O hybridization is found to have an unexpectedly strong dependence on strain that is not predicted by band theory, emphasizing the relevance of the O ion to the physics of VO 2.

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