Pseudogap behavior in single crystals of Bi2Sr2CaCu2O8+δ

被引：2
|
作者：
Ishida, K
Tokunaga, Y
Kotegawa, H
Yoshida, K
Mito, T
Kitaoka, Y
Asayama, K
Nakayama, Y
Shimoyama, J
Kishio, K
机构：
[1] Osaka Univ, Grad Sch Engn Sci, Dept Phys Sci, Toyonaka, Osaka 5608531, Japan
[2] Univ Tokyo, Dept Superconduct, Bunkyo Ku, Tokyo 113, Japan
来源：
PHYSICA B-CONDENSED MATTER | 1999年 / 259-61卷
关键词：
high-T-c; pseudogap; Bi2Sr2CaCu2O8; NMR/NQR;
D O I：
10.1016/S0921-4526(98)01036-9
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
In under- and optimally doped Bi2Sr2CaCu2O8 (Bi2212), we found a characteristic temperature T-K(*);s below which the spin part of Knight shift K-s starts to decrease steeply and extrapolates to zero at T > 0. TK is in good agreement with the temperatures at which the pseudogap starts to open in the quasiparticle density of states (DOS) at the Fermi level, and T* at which 1/T1T has a broad peak. We propose that the spin-gap behavior observed in NMR measurements has the same origin as the pseudogap in the quasiparticle DOS. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：559 / 561
页数：3
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