Superconducting gap and pseudogap in Bi-2212

被引：1
作者：
Opel, M
Venturini, F
Hackl, R
Revaz, B
Berger, H
Forró, L
机构：
[1] Bayer Akad Wissensch, Walther Meissner Inst, D-85748 Garching, Germany
[2] Univ Geneva, DPMC, CH-1211 Geneva, Switzerland
[3] Ecole Polytech Fed Lausanne, IGA, CH-1015 Lausanne, Switzerland
来源：
PHYSICA B | 2000年 / 284卷
关键词：
Bi-2212; pseudogap; Raman scattering; superconducting energy gap;
D O I：
10.1016/S0921-4526(99)02344-3
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We present results of Raman scattering experiments in differently doped Bi2Sr2(CaxY1-x)Cu2O8+delta (Bi-2212) single crystals. Below T-c the spectra show pair-breaking features in the whole doping range reflecting a d(x2+y2) order parameter. In the normal state between T-c and T* similar or equal to 200 K we find signatures for a pseudogap in B-2g symmetry which disappear above optimal doping. (C) 2000 Elsevier Science B.V. All rights reserved.
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收藏
页码：669 / 670
页数：2
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