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Proceedings Paper

ARPES studies of the superconducting gap in high-temperature superconductors
Author(s): H. Ding; M. R. Norman; John Giapintzakis; Juan Carlos Campuzano; H. Claus; H. Wuehl; M. Randeria; A. Bellman; T. Yokoya; Takashi Takahashi; Takashi Mochiku; Kazuo Kadowaki; Don M. Ginsberg
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Paper Abstract

Using high resolution angle-resolved photoemission spectroscopy (ARPES), we measure the superconducting gap and its momentum dependence in the high temperature superconductors Bi2Sr2CaCu2O8 (Bi2212) and YBa2Cu3O6.95 (Y123). It is found that umklapp bands due to the incommensurate superlattice in Bi2212 may obscure the intrinsic momentum dependence of the gap. By taking these into consideration, we find a d- wave-like gap function in Bi2212. We also report an unambiguous observation of the superconducting gap in Y123.

Paper Details

Date Published: 10 June 1996
PDF: 11 pages
Proc. SPIE 2696, Spectroscopic Studies of Superconductors, (10 June 1996); doi: 10.1117/12.241767
Show Author Affiliations
H. Ding, Argonne National Lab. and Univ. of Illinois/Chicago (United States)
M. R. Norman, Argonne National Lab. (United States)
John Giapintzakis, Univ. of Illinois/Urbana-Champaign (United States)
Juan Carlos Campuzano, Argonne National Lab. and Univ. of Illinois/Chicago (United States)
H. Claus, Forchungszentrum Karlsruhe (Germany)
H. Wuehl, Forchungszentrum Karlsruhe (Germany)
M. Randeria, Argonne National Lab. (United States)
A. Bellman, Argonne National Lab. (United States)
T. Yokoya, Tohoku Univ. (Japan)
Takashi Takahashi, Tohuku Univ. (Japan)
Takashi Mochiku, National Research Institute for Metals (Japan)
Kazuo Kadowaki, National Research Institute for Metals (Japan)
Don M. Ginsberg, Univ. of Illinois/Urbana-Champaign (United States)

Published in SPIE Proceedings Vol. 2696:
Spectroscopic Studies of Superconductors
Ivan Bozovic; Dirk van der Marel, Editor(s)

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