Gap inhomogeneity, phase separation and a pseudogap in Bi2Sr2CaCu2O8+δ

被引：35
|
作者：
Matsuda, A
Fujii, T
Watanabe, T
机构：
[1] NTT Corp, Basic Res Labs, Kanagawa 2430198, Japan
[2] Waseda Univ, Dept Appl Phys, Shinjuku Ku, Tokyo 1698555, Japan
[3] NTT Corp, Photon Labs, Kanagawa 2430198, Japan
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2003年 / 388卷
关键词：
gap inhomogeneity; Bi2Sr2CaCu2O8; pseudogap;
D O I：
10.1016/S0921-4534(02)02378-X
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Gap inhomogeneity in Bi2Sr2CaCu2O8 has been studied by low-temperature STM. We found a systematic relation between the local gap energy and local background density of states. A model analysis of the dip-hump structure gave evidence of in-plane charge inhomogeneity. The temperature/doping dependences of the pattern shape of inhomogeneity as well as the gap distribution function were measured. We could identify the signature of phase separation into the superconducting and pseudogapped phases as the appearance of a double-peak structure in the distribution function. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：207 / 208
页数：2
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