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Electron-Like Fermi Surface and Remnant (pi,0) Feature in Overdoped La1.78Sr0.22CuO4

T. Yoshida·X. J. Zhou·M. Nakamura·S. A. Kellar·P. V. Bogdanov·E. D. Lu·A. Lanzara·Z. Hussain·A. Ino·T. Mizokawa·A. Fujimori·H. Eisaki·C. Kim·Z. -X. Shen·T. Kakeshita·S. Uchida
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Abstract

We have performed an angle-resolved photoemission study of overdoped La1.78Sr0.22CuO4, and have observed sharp nodal quasiparticle peaks in the second Brillouin zone that are comparable to data from Bi2Sr2CaCu2O8+d. The data analysis using energy distribution curves, momentum distribution curves and intensity maps all show evidence of an electron-like Fermi surface, which is well explained by band structure calculations. Evidence for many-body effects are also found in the substantial spectral weight remaining below the Fermi level around (pi,0), where the band is predicted to lie above EF.

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T. Yoshida, X. J. Zhou, M. Nakamura, S. A. Kellar, P. V. Bogdanov, E. D. Lu, A. Lanzara, Z. Hussain, A. Ino, T. Mizokawa, A. Fujimori, H. Eisaki, C. Kim, Z. -X. Shen, T. Kakeshita, S. Uchida. 2001-03-03. Electron-Like Fermi Surface and Remnant (pi,0) Feature in Overdoped La1.78Sr0.22CuO4. https://doi.org/10.1103/physrevb.63.220501

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