EVIDENCE FOR BROKEN TIME-REVERSAL SYMMETRY IN CUPRATE SUPERCONDUCTORS

被引：83

作者：

WEBER, HJ

WEITBRECHT, D

BRACH, D

SHELANKOV, AL

KEITER, H

WEBER, W

WOLF, T

GEERK, J

LINKER, G

ROTH, G

SPLITTGERBERHUNNEKES, PC

GUNTHERODT, G

机构：

[1] AF IOFFE PHYSICOTECH INST,LENINGRAD 194021,USSR

[2] KERNFORSCHUNGSZENTRUM KARLSRUHE GMBH,INST TECH PHYS,W-7500 KARLSRUHE 1,GERMANY

[3] KERNFORSCHUNGSZENTRUM KARLSRUHE GMBH,INST NUKL FESTKORPERPHYS,W-7500 KARLSRUHE 1,GERMANY

[4] RHEIN WESTFAL TH AACHEN,INST PHYS 2,W-5100 AACHEN,GERMANY

来源：

SOLID STATE COMMUNICATIONS | 1990年 / 76卷 / 04期

关键词：

D O I：

10.1016/0038-1098(90)90660-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Reflection measurements on a one-dimensional single crystal of YBa2Cu3O7-δ and transmission measurements on single crystals of Bi2Sr2CaCu2O8 are reported which indicate optical circular effects below temperatures Ts somewhat above the respective superconducting temperatures Tc. The signs of rotation can be controlled by an external magnetic field. We interpret these results as strong evidence for a state with broken time reversal symmetry below Ts, as predicted by the theories of anyon or flux phase superconductivity. © 1990.

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页码：511 / 516

页数：6

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