Journal
PHYSICAL REVIEW LETTERS
Volume 85, Issue 24, Pages 5194-5197Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.85.5194
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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 the van Hove singularity at the M point, showing that a surface state and the replica of the primary FS due to root2 X root2 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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