PINNING IN THE FLUX-LINE-CUTTING REGIME OF BI2SR2CA1CU2O8 SINGLE-CRYSTALS AT HIGH-FIELD

被引：11

作者：

DANNA, G ^{[1
]}

ANDRE, MO ^{[1
]}

INDENBOM, MV ^{[1
]}

BENOIT, W ^{[1
]}

机构：

[1] RUSSIAN ACAD SCI,INST SOLID STATE PHYS,CHERNOGOLOVKA 142432,RUSSIA

来源：

PHYSICA C | 1994年 / 230卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(94)90452-9

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Using a low-frequency torsion pendulum we show that in a Bi2Sr2Ca1Cu2O8 Single crystal the irreversibility line B-irr(T) is frequency dependent down to 10(-5) Hz in the high-field regime. The activation energy has a logarithmic field dependence, U-0(B)=U*1n(B*/B). A microscopic model for flux-line-cutting and pancake collision yields quantitative expressions for U(0)and for B-irr( T)=B* exp(- T/T*), which reproduce the experimental data very well.

引用

页码：115 / 120

页数：6

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