Fermi Surface and Quasiparticle Excitations of Sr2RhO4
Journal Article
·
· Physical Review Letters
- Stanford University
- University of St. Andrews, St. Andrews, Fife, United Kingdom
- Lawrence Berkeley National Laboratory (LBNL)
- ORNL
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 4dxz;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.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC05-00OR22725
- OSTI ID:
- 1003597
- Journal Information:
- Physical Review Letters, Vol. 96, Issue 24; ISSN 0031--9007
- Country of Publication:
- United States
- Language:
- English
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