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首页> 外文期刊>Physica, C. Superconductivity and its applications >On detection of the Fermi edge in in situ grown thin films of high-T-c oxides
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On detection of the Fermi edge in in situ grown thin films of high-T-c oxides

机译:检测高T-c氧化物原位生长薄膜中的费米边缘

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We discuss our systematic series of experiments on the photoelectric detection of the Fermi edge using a cylindrical mirror analyser on films of high-T-c oxides. grown in situ by pulsed laser ablation. The Fermi edge (comparable to the edge of the reference Ag) is very easily observed even in the two-phase BSCCO-2212 film that exhibits onsets of superconducting transitions, at 85 and 45 K. In contrast, the Fermi edge is weaker and more difficult to observe even in the state-of-the-art. highly epitaxial, monophase YBa2Cu3O7-y (YBCO) and NdBa2Cu3O7-y. (NBCO-123) films (both with T-c = 92 K). So far we could not detect the Fermi edge in the films of the double-'chain' YBCO-124. (C) 2001 Elsevier Science B.V. All rights reserved. [References: 16]
机译:我们讨论使用圆柱镜分析仪对高T-c氧化物薄膜进行费米边缘光电检测的系统实验系列。通过脉冲激光烧蚀原位生长。即使在两相BSCCO-2212膜中,在85 K和45 K处出现超导转变,费米边缘(与参比Ag的边缘相比)也非常容易观察到。相反,费米边缘较弱,且强度更大即使在最新技术中也很难观察到。高度外延的单相YBa2Cu3O7-y(YBCO)和NdBa2Cu3O7-y。 (NBCO-123)胶片(均为T-c = 92 K)。到目前为止,我们还无法在“双链” YBCO-124的胶片中检测到费米边缘。 (C)2001 Elsevier Science B.V.保留所有权利。 [参考:16]

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