Fermi surface and quasiparticle excitations of Sr2RhO4

F. Baumberger, N. J. C. Ingle, W. Meevasana, K. M. Shen, D. H. Lu, R. S. Perry, A. P. Mackenzie, Z. Hussain, D. J. Singh, Z. -X. Shen

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)

Abstract

The electronic structure of the layered 4d transition metal oxide Sr2RhO4 is investigated by angle resolved photoemission. We find well-defined quasiparticle excitations with a highly anisotropic dispersion, suggesting a quasi-two-dimensional Fermi-liquid-like ground state. Markedly different from the isostructural Sr2RuO4, only two bands with dominant Rh 4d(xz,zy) character contribute to the Fermi surface. A quantitative analysis of the photoemission quasiparticle band structure is in excellent agreement with bulk data. In contrast, it is found that state-of-the-art density functional calculations in the local density approximation differ significantly from the experimental findings.

Original languageEnglish
Pages (from-to)246402
Number of pages4
JournalPhysical Review Letters
Volume96
Issue number24
DOIs
Publication statusPublished - 23 Jun 2006

Keywords

  • SUPERCONDUCTOR SR2RUO4
  • PHASE

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