The Fermi surface of a high-Tc superconductor at optimum doping by angle-scanning photoemission spectroscopy

被引：8

作者：

Bianconi, A

Saini, NL

Valletta, A

Lanzara, A

Avila, J

Asensio, MC

Tajima, S

Gu, GD

Koshizuka, N

机构：

[1] Univ Rome La Sapienza, Dipartimento Fis, Inst Nazl Fis Mat, I-00185 Rome, Italy

[2] Univ Paris Sud, LURE, F-91405 Orsay, France

[3] CSIC, Inst Ciencia Mat, E-28049 Madrid, Spain

[4] ISTEC, Superconduct Res Lab, Koto Ku, Tokyo 135, Japan

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1998年 / 59卷 / 10-12期

关键词：

high-T-c superconductor; Fermi surface; angle-scanning photoemission spectroscopy;

D O I：

10.1016/S0022-3697(98)00132-2

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Evidence for charge fluctuations in diagonal stripes coupled with electrons at the Fermi surface is reported. Superconducting Bi2Sr2CaCu2O8+delta at optimum doping (T-c = 91 K) has been studied by angle-scanning photoemission spectroscopy using synchrotron radiation. The Fermi surface shows broken segments and hot spots of high spectral weight. The suppression of spectral weight in the pseudogap region near M = (pi,0) is shown to be due to a charge modulation with wavevector q(1) approximate to 0.4(pi,pi) associated with the superlattice of one-dimensional (1D) diagonal stripes or 1D charge-density waves. These stripes coexist with collective spin and charge fluctuations in the vertical direction. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.

引用

页码：1884 / 1887

页数：4

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