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Electronlike Fermi surface and remnant (π,0) feature in overdoped La1.78Sr0.22CuO4

Phys. Rev. B 63, 220501(R) – Published 3 May 2001
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, and S. Uchida

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+δ. The data analysis using energy distribution curves, momentum distribution curves, and intensity maps all show evidence of an electronlike 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 (π,0), where the band is predicted to lie above EF.

DOI: http://dx.doi.org/10.1103/PhysRevB.63.220501

  • Received 6 November 2000
  • Published 3 May 2001

© 2001 The American Physical Society

Authors & Affiliations

T. Yoshida1, X. J. Zhou2, M. Nakamura3, S. A. Kellar2, P. V. Bogdanov2, E. D. Lu4, A. Lanzara2,4, Z. Hussain4, A. Ino5, T. Mizokawa6, A. Fujimori1,6, H. Eisaki2, C. Kim2, Z.-X. Shen2, T. Kakeshita7, and S. Uchida7

  • 1Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
  • 2Department of Applied Physics and Stanford Synchrotron Radiation Laboratory, Stanford University, Stanford, California 94305
  • 3Department of Physics, Nara University of Education, Takabatake-cho, Nara 630-8523, Japan
  • 4Advanced Light Source, Lawrence Berkeley National Lab, Berkeley, California 94720
  • 5Synchrotron Radiation Research Center, Japan Atomic Energy Research Institute, Spring-8, Mikazuki, Sayo, Hyogo 679-5198, Japan
  • 6Department of Complexity Science and Engineering, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
  • 7Department of Advanced Materials Science, University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan

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