Flux creep and critical current density of the vortex liquid phase in YBa2Cu3O7-δ film

被引：0
|
作者：
Shan, L [1 ]
Wang, ZH
Xu, XN
Jin, X
Shen, LJ
Lam, CC
机构：
[1] Nanjing Univ, Dept Phys, Nanjing 210008, Peoples R China
[2] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210008, Peoples R China
来源：
PHYSICA C | 2000年 / 341卷
关键词：
D O I：
10.1016/S0921-4534(00)00923-0
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The current-voltage characteristics (CVC's) of YBa2Cu3O7-delta epitaxial film were determined at various temperatures and magnetic fields. The pinning potential U-0(T, H), critical current density J(c)(T, H) and effective pinning potential U-eff(H, T, J) were derived from the CVC's. It is shown that the nonlinear response regime of the vortex-liquid (NRVL) display a changing process from vortex plastic creep to free flow with the dynamic exponent changing from -0.5 to 0.
引用
收藏
页码：1327 / 1328
页数：2
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