Fermi Surface, Surface States, and Surface Reconstruction in Sr2RuO4

Details Fermi Surface, Surface States, and Surface Reconstruction in Sr2RuO4 Fermi Surface, Surface States, and Surface Reconstruction in Sr2RuO4

2000-08-31

arxiv.org/abs/cond-mat/0008462v2

Phys. Rev. Lett. 85, 5194 (2000)

Physics

Condensed Matter

Strongly Correlated Electrons

Final version for Physical Review Letters. Revtex, 4 pages, 4 postscript pictures embedded in the text

Scientific paper

10.1103/PhysRevLett.85.5194

The electronic structure of Sr2RuO4 is investigated by high angular resolution ARPES at several incident photon energies. We address the controversial issues of the Fermi surface (FS) topology and of the van Hove singularity at the M point, showing that a surface state and the replica of the primary FS due to (sqrt2 x sqrt2) surface reconstruction are responsible for previous conflicting interpretations. The FS thus determined by ARPES is consistent with the de Haas-van Alphen results, and it provides additional information on the detailed shape of the alpha, beta and gamma sheets.

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