OBSERVATION OF A VANHOVE SINGULARITY IN BI2SR2CACU2O8+X WITH ANGLE-RESOLVED PHOTOEMISSION

被引：93

作者：

MA, J

QUITMANN, C

KELLEY, RJ

ALMERAS, P

BERGER, H

MARGARITONDO, G

ONELLION, M

机构：

[1] UNIV WISCONSIN,CTR APPL SUPERCONDUCT,MADISON,WI 53706

[2] ECOLE POLYTECH FED LAUSANNE,INST PHYS APPL,CH-1015 LAUSANNE,SWITZERLAND

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.51.3832

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have performed high-energy-resolution angle-resolved photoemission studies of the normal-state band structure of oxygen-overdoped Bi2Sr2CaCu2O8+x. We find that there is an extended saddle-point singularity in the density of states along the Γ-M̄-Z direction. The data also indicate that there is an asymmetry in the Fermi surface for both the Γ-M̄-Z and perpendicular directions. © 1995 The American Physical Society.

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页码：3832 / 3839

页数：8

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