Renormalized band structure of Sr2RuO4: A quasiparticle tight-binding approach

V. B. Zabolotnyy, D. V. Evtushinsky, A. A. Kordyuk, T. K. Kim, E. Carleschi, B. P. Doyle, R. Fittipaldi, M. Cuoco, A. Vecchione, S. V. Borisenko

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)

Abstract

We derive an effective quasiparticle tight-binding model which is able to describe with high accuracy the low-energy electronic structure of Sr 2RuO4 obtained by means of low temperature angle resolved photoemission spectroscopy. Such an approach is applied to determine the momentum and orbital dependent effective masses and velocities of the electron quasiparticles close to the Fermi level. We demonstrate that the model can provide, among the various computable physical quantities, a very good agreement with the experimentally measured specific heat coefficient and compares well with the plasma frequency estimated from local density calculations. Its use is underlined as a realistic input in the analysis of the possible electronic mechanisms related to the superconducting state of Sr2RuO 4.

Original languageEnglish
Pages (from-to)48-53
Number of pages6
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume191
DOIs
Publication statusPublished - Dec 2013

Keywords

  • ARPES
  • Electronic band structure
  • Strontium ruthenate
  • Surface photoemission
  • Tight-binding model

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry

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