Bilayer Splitting in the Electronic Structure of Heavily Overdoped Bi2Sr2CaCu2O8+δ

Phys. Rev. Lett. 86, 5550 – Published 11 June 2001
D. L. Feng, N. P. Armitage, D. H. Lu, A. Damascelli, J. P. Hu, P. Bogdanov, A. Lanzara, F. Ronning, K. M. Shen, H. Eisaki, C. Kim, Z.-X. Shen, J.-i. Shimoyama, and K. Kishio

Abstract

The electronic structure of heavily overdoped Bi2Sr2CaCu2O8+δ is investigated by angle-resolved photoemission spectroscopy. The long-sought bilayer band splitting in this two-plane system is observed in both normal and superconducting states, which qualitatively agrees with the bilayer Hubbard model calculations. The maximum bilayer energy splitting is about 88 meV for the normal state feature, while it is only about 20 meV for the superconducting peak.

DOI: http://dx.doi.org/10.1103/PhysRevLett.86.5550

  • Received 18 January 2001
  • Published in the issue dated 11 June 2001

© 2001 The American Physical Society

Authors & Affiliations

D. L. Feng, N. P. Armitage, D. H. Lu, A. Damascelli, J. P. Hu, P. Bogdanov, A. Lanzara, F. Ronning, K. M. Shen, H. Eisaki, C. Kim, and Z.-X. Shen

  • Department of Physics, Applied Physics and Stanford Synchrotron Radiation Laboratory, Stanford University, Stanford, California 94305

J.-i. Shimoyama and K. Kishio

  • Department of Applied Chemistry, University of Tokyo, Tokyo, 113-8656, Japan

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