Pinning strength dependence of mixed-state Hall effect in YBa2Cu3O7 crystals with columnar defects

被引：67

作者：

Kang, WN

Kim, DH

Shim, SY

Park, JH

Hahn, TS

Choi, SS

Lee, WC

Hettinger, JD

Gray, KE

Glagola, B

机构：

[1] YEUNGNAM UNIV, DEPT PHYS, KYUNGSAN 712749, SOUTH KOREA

[2] SOOKMYUNG WOMANS UNIV, SEOUL 140742, SOUTH KOREA

[3] ARGONNE NATL LAB, DIV MAT SCI, ARGONNE, IL 60439 USA

[4] ARGONNE NATL LAB, DIV PHYS, ARGONNE, IL 60439 USA

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.76.2993

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The mixed-state Hall effect of twinned YBa2Cu3O7 crystals after heavy-ion irradiation clearly showed that the strong pinning induced by columnar defects not only modifies the scaling behavior between the Hall resistivity and longitudinal resistivity, but affects the temperature dependence of the Hall conductivity. For the irradiated crystals, the scaling exponent at 4 T was found to be 1.5 +/- 0.1 compared to 2.0 +/- 0.2 for the unirradiated one. The temperature dependence of the Hall conductivity of the irradiated crystals exhibited a clear deviation from that of the unirradiated one at low temperatures.

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页码：2993 / 2996

页数：4

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