Phys. Rev. B 75, 035122 (2007) [10 pages]Evidence for strong electronic correlations in the spectra of Sr2RuO4Received 24 January 2006; revised 5 October 2006; published 18 January 2007 We identify a satellite structure at −3 eV in the photoemission spectra of layered perovskite Sr2RuO4 as a lower Hubbard band. To this end we use state-of-the-art local-density approximation plus dynamical mean-field theory (LDA+DMFT) in the basis of Wannier functions to compute spectral functions and the quasiparticle dispersion of Sr2RuO4, and then compare the results with newly measured angle-integrated and angle-resolved spectra with 700-eV photon energy. Our theoretical spectra are in overall qualitative agreement with various spectroscopic experiments. We also calculate the k dependence of the quasiparticle bands and compare the results with high-energy bulk sensitive angle-resolved photoemission data. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.75.035122
DOI:
10.1103/PhysRevB.75.035122
PACS:
71.27.+a, 79.60.−i
See AlsoComment: D. J. Singh, Comment on “Evidence for strong electronic correlations in the spectra of Sr2RuO4”, Phys. Rev. B 77, 046101 (2008). Comment: Z. V. Pchelkina, I. A. Nekrasov, Th. Pruschke, S. Suga, V. I. Anisimov, and D. Vollhardt, Reply to “Comment on ‘Evidence for strong electronic correlations in the spectra of Sr2RuO4’ ”, Phys. Rev. B 77, 046102 (2008). |
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