VORTEX-MOTION-INDUCED VOLTAGE NOISE IN YBA2CU3O7-DELTA SINGLE-CRYSTALS

被引：89

作者：

DANNA, G ^{[1
]}

GAMMEL, PL ^{[1
]}

SAFAR, H ^{[1
]}

ALERS, GB ^{[1
]}

BISHOP, DJ ^{[1
]}

GIAPINTZAKIS, J ^{[1
]}

GINSBERG, DM ^{[1
]}

机构：

[1] UNIV ILLINOIS,DEPT PHYS,CHAMPAIGN,IL 61801

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.75.3521

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have investigated vortex motion below the quasistatic melting transition in a detwinned YBa2Cu3O7-delta single crystal by measuring the differential resistance and the voltage noise. With the magnetic field parallel to the copper-oxygen planes and the large, flat surface of the sample, the noise power spectrum permits us to deduce that the surfaces are the dominant source of the noise and that the vortices appear to be flowing in channels. In certain regimes, the noise power spectrum exhibits unusually sharp and distinct peaks which are periodic in frequency.

引用

页码：3521 / 3524

页数：4

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