Low energy excitation and scaling in Bi(2)Sr(2)Ca(n-1)Cu(n)O(2n+4) (n=1-3): angle-resolved photoemission spectroscopy.
Low energy excitation and scaling in Bi(2)Sr(2)Ca(n-1)Cu(n)O(2n+4) (n=1-3): angle-resolved photoemission spectroscopy.
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DOI：
10.1103/physrevlett.89.067005
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发表时间：
2001-08
影响因子：
8.6
通讯作者：
Takafumi Sato;Hiroshi Matsui;S. Nishina;Takashi Takahashi;T. Fujii;Takao Watanabe;A. Matsuda;A. Matsuda
中科院分区：
文献类型：
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作者：
Takafumi Sato;Hiroshi Matsui;S. Nishina;Takashi Takahashi;T. Fujii;Takao Watanabe;A. Matsuda;A. Matsuda
用角分辨光电子能谱(ARPES)研究了单层到三层Bi系高温T(C)超导体(Bi(2)Sr(2)Ca(n-1)Cu(n+4)，n=1-3)。我们在三层化合物的费米能级上发现了一个尖锐的相干峰和一个赝隙。三种化合物的比较揭示了一个普遍的规律，即超导和赝隙行为的特征能量与最大T(C)成比例。
Angle-resolved photoemission spectroscopy (ARPES) has been performed on the single- to triple-layered Bi-family high-T (c) superconductors (Bi(2)Sr(2)Ca(n-1)Cu(n)O(2n+4), n=1-3). We found a sharp coherent peak as well as a pseudogap at the Fermi level in the triple-layered compound. Comparison among three compounds has revealed a universal rule that the characteristic energies of superconducting and pseudogap behaviors are scaled with the maximum T (c).