Orbital-resolved soft x-ray spectroscopy in NaV2O5

G. P. Zhang, G. T. Woods, Eric L. Shirley, T. A. Callcott, L. Lin, G. S. Chang, B. C. Sales, D. Mandrus, J. He

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We demonstrate that angle-resolved soft x-ray spectroscopy can resolve absorption by inequivalent oxygen sites and by different orbitals belonging to the same site in NaV2O5. By rotating the polarization direction, we see a dramatic change in the absorption spectra at the oxygen K edge. Our theory identifies the detailed composition of the spectra and predicts a correct energy ordering of the orbitals of three inequivalent oxygen atoms. Because different orbitals dominate absorption spectra at different energies and angles, one can excite at a specific site and "orbital." In contrast, absorption at the vanadium L edge does not show large changes when varying the polarization direction. The reason for this is that different excitation channels (involving different initial states for the excited electron) overlap in energy and vary in compensating ways, obscuring each channel's sensitive polarization dependence.

Original languageEnglish
Article number165107
Pages (from-to)1651071-1651076
Number of pages6
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume65
Issue number16
Publication statusPublished - 2002 Apr 15

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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