ARPES studies of the superconducting gap in high-temperature superconductors

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

doi:10.1117/12.241767

10 June 1996 ARPES studies of the superconducting gap in high-temperature superconductors

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

Author Affiliations +

Proceedings Volume 2696, Spectroscopic Studies of Superconductors; (1996) https://doi.org/10.1117/12.241767
Event: Photonics West '96, 1996, San Jose, CA, United States

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 YBa₂Cu₃O_6.95 (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.

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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, and Don M. Ginsberg "ARPES studies of the superconducting gap in high-temperature superconductors", Proc. SPIE 2696, Spectroscopic Studies of Superconductors, (10 June 1996); https://doi.org/10.1117/12.241767

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