Flux Dynamics and Vortex Phase Diagram in Tl2Ba2CaCu2O8 Thin Films

被引：0
|
作者：
Hai-Hu Wen
机构：
[1] Institute of Physics and Center for Condensed Matter Physics,National Laboratory for Superconductivity
来源：
Journal of Low Temperature Physics | 1999年 / 117卷
关键词：
Magnetic Field; Vortex; Thin Film; Phase Diagram; Magnetic Material;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
By doing sensitive magnetic measurement, the current-voltage ( I-V or E-j ) characteristics were determined for Tl2Ba2CaCu2O8thin films at temperatures between 4.2 K and 70 K in magnetic fields up to 6T. We found a crossover of the dimensionality of flux dynamics from 3D at low fields to 2D at high fields. The vortex matter melts at a finite temperature at a low field ( 3D ) and at zero K at a high field ( 2D ). Finally we attempt to give a vortex phase diagram based on this analysis.
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页码：1411 / 1415
页数：4
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