Interplay of oxygen vacancies and electronic correlations in SrVO$_3$

ORAL

Abstract

We investigate the role of oxygen vacancies in SrVO$_3$ within LDA+DMFT (density functional theory combined with dynamical mean-field theory). We show that, in addition to the usual $t_{2g}$ lower Hubbard band, oxygen vacancies are responsible for an additional peak around $-1$~eV of V $3d_{z^2}$ orbital character, which is not present in the bulk system without vacancies. We discuss our results in the light of recent angle-resolved photoemission (ARPES) experiments.

*Financial support by DFG SPP 1458 and FOR 1346.

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Authors

  • Steffen Backes

    • Institut f\"ur Theoretische Physik, Universit\"at Frankfurt

  • Aaram J. Kim

    • Institut f\"ur Theoretische Physik, Universit\"at Frankfurt

  • Frank Lechermann

    • Institut f\"ur Theoretische Physik, Universit\"at Hamburg

  • Harald O. Jeschke

    • Institut f\"ur Theoretische Physik, Universit\"at Frankfurt

  • Marcelo J. Rozenberg

    • Laboratoire de Physique des Solides, Universit\'e Paris-Sud

  • Andres F. Santander Syro

    • CSNSM, Universit\'e Paris-Sud and CNRS/IN2P3

  • Roser Valenti

    • Institut f\"ur Theoretische Physik, Universit\"at Frankfurt