Angle-resolved photoemission spectroscopy study of the superconducting gap anisotropy in Bi2Sr2CaCu2O8+x

被引：258

作者：

Ding, H

Norman, MR

Campuzano, JC

Randeria, M

Bellman, AF

Yokoya, T

Takahashi, T

Mochiku, T

Kadowaki, K

机构：

[1] UNIV ILLINOIS, DEPT PHYS, CHICAGO, IL 60607 USA

[2] TATA INST FUNDAMENTAL RES, BOMBAY 400005, MAHARASHTRA, INDIA

[3] UNIV MILAN, DIPARTIMENTO FIS, I-20133 MILAN, ITALY

[4] TOHOKU UNIV, DEPT PHYS, SENDAI, MIYAGI 980, JAPAN

[5] NATL RES INST MET, TSUKUBA, IBARAKI 305, JAPAN

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.54.R9678

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report measurements of the momentum dependence of die superconducting gap in Bi2Sr2CaCu2O8+x with angle-resolved photoemission spectroscopy using a dense sampling of the Brillouin zone in the vicinity of the Fermi surface. In the Y quadrant of the zone, where there are no complications from ghost bands caused by the superlattice, we find a gap function consistent within error bats to the form cos(k(x))-cos(k(y)) expected for a d-wave order parameter. Similar results are found in the X quadrant with the photon polarization chosen to enhance main band emission over that due to ghost bands.

引用

页码：R9678 / R9681

页数：4

共 14 条

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