Strain dependence of bonding and hybridization across the metal-insulator transition of VO2

Details Strain dependence of bonding and hybridization across the metal-insulator transition of VO2 Strain dependence of bonding and hybridization across the metal-insulator transition of VO2

2012-02-10

arxiv.org/abs/1202.2286v1

Phys. Rev. B 85, 081104(R) (2012)

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1103/PhysRevB.85.081104

Soft x-ray spectroscopy is used to investigate the strain dependence of the metal-insulator transition of VO2. Changes in the strength of the V 3d - O 2p 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 VO2.

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