SOFT-X-RAY-ABSORPTION STUDIES OF THE ELECTRONIC-STRUCTURE CHANGES THROUGH THE VO2 PHASE-TRANSITION

M ABBATE*, FMF DEGROOT, JC FUGGLE, YJ MA, CT CHEN, F SETTE, A FUJIMORI, Y UEDA, K KOSUGE, Frank de Groot

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

We present the O 1s and V 2p absorption edges of VO2 at room temperature and at T = 120-degrees-C, i.e., below and above the metal-insulator transition temperature T(c) almost-equal-to 67-degrees-C. The O 1s spectra show a clear splitting of 1 eV in the unoccupied d-parallel-to band below T(c). Because the V 2p absorption edges are dominated by the V 2p-3d interaction in the final state, these spectra show minor changes that cannot be easily correlated with the changes in the unoccupied density of states.

Original languageEnglish
Pages (from-to)7263-7267
Number of pages5
JournalPhysical review. B, condensed matter
Volume43
Issue number9
Publication statusPublished - 15 Mar 1991
Externally publishedYes

Keywords

  • METALLIC VO2
  • OXIDES
  • SPECTROSCOPY
  • ENERGY
  • MONOCHROMATORS
  • PHOTOELECTRON
  • INSULATOR
  • SPECTRA
  • LINES
  • NBO2

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