ARPES studies of the superconducting gap in high-temperature superconductors

机译：ARPES研究高温超导体中的超导间隙

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Abstract: Using high resolution angle-resolved photoemissionspectroscopy (ARPES), we measure the superconductinggap and its momentum dependence in the high temperaturesuperconductors Bi$-2$/Sr$-2$/CaCu$-2$/O$-8$/ (Bi2212)and YBa$-2$/Cu$-3$/O$-6.95$/ (Y123). It is found thatumklapp bands due to the incommensurate superlattice inBi2212 may obscure the intrinsic momentum dependence ofthe gap. By taking these into consideration, we find ad- wave-like gap function in Bi2212. We also report anunambiguous observation of the superconducting gap inY123. !14

机译：摘要：利用高分辨率角分辨光发射光谱（ARPES），我们测量了高温超导体Bi $ -2 $ / Sr $ -2 $ / CaCu $ -2 $ / O $ -8 $ /（ Bi2212）和YBa $ -2 $ / Cu $ -3 $ / O $ -6.95 $ /（Y123）。发现Bi2212中超晶格不相称引起的umklapp带可能掩盖了间隙的内在动量依赖性。通过考虑这些因素，我们在Bi2212中发现了类似adwave的间隙函数。我们还报告了对Y123中超导间隙的明确观察。！14

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《Spectroscopic Studies of Superconductors》|1996年|p.496-506|共11页
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Author(s): H.Ding Argonne National Lab. and Univ. of Illinois/Chicago Chicago IL USA; M.R. Norman Argonne National Lab. Argonne IL USA; John Giapintzakis Univ. of Illinois/Urbana-Champaign Urbana IL USA; Juan C. Campuzano Argonne National Lab. and Univ. of Illinois/Chicago Argonne IL USA; H.Claus Forchungszentrum Karlsruhe Karlsruhe Germany; H.Wuehl Forchungszentrum Karlsruhe Karlsruhe Germany; M.Randeria Argonne National Lab. Argonne IL USA; A.Bellman Argonne National Lab. Argonne IL USA; T.Yokoya Tohoku Univ. Sendai Japan; T.Takahashi Tohoku Univ. Sendai Japan; T.Mochiku National Research Institute for Metals Ibaraki Japan; Kazuo Kadowaki National Research Institute for Metals Ibaraki Japan; Don M. Ginsberg Univ. of Illinois/Urbana-Champaign Urbana IL USA.;
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ARPES studies of the superconducting gap in high-temperature superconductors

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