POWER-LAW IV CHARACTERISTICS IN THE SUPERCONDUCTING TRANSITION REGION OF BI-SR-CA-CU-O SINGLE-CRYSTAL UNDER MAGNETIC-FIELDS

被引：3

作者：

ANDO, Y

MOTOHIRA, N

KITAZAWA, K

TAKEYA, J

AKITA, S

机构：

[1] UNIV TOKYO, DEPT IND CHEM, BUNKYO KU, TOKYO 113, JAPAN

[2] CENT RES INST ELECT POWER IND, TOKYO 201, JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1991年 / 30卷 / 9B期

关键词：

HIGH-TC SUPERCONDUCTOR; FLUX CREEP; KOSTERLITZ-THOULESS TRANSITION; FLUX FLOW; IV CHARACTERISTICS; DISSIPATION;

D O I：

10.1143/JJAP.30.L1635

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The resistive state in single-crystal Bi2Sr2CaCu2Oy with field applied perpendicular to the c-axis has been studied to investigate the origin of the Lorentz-force-independent dissipation. It was observed that the current-voltage characteristics obey a power law in the higher current density region in our experiment (J greater-than-or-equal-to 20 A.cm-2), and that the power-law exponent and the resistivity show an unusual dependence on the magnetic field. These observations strongly suggest that a Kosterlitz-Thouless-type mechanism plays an essential role in the Lorentz-force-independent dissipation.

引用

页码：L1635 / L1637

页数：3

共 17 条

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