考虑质量效应的混合态中的vortex物质的Brownian运动  

BROWNIAN MOTION OF VORTEX MATTER IN MIXED STATE WITH INERTIA EFFECT BEEN TAKEN INTO ACCOUNT

作　　者：刘刚[1] 韩汝珊[1] 

机构地区：[1]北京大学物理系,北京100871

出　　处：《低温物理学报》2000年第4期267-271,共5页Low Temperature Physical Letters

摘　　要：Use MCFM and Krameres escape rate method, we investigate the creep behavior of pinned vortices in mixed state with inertial effect been taken into account. We find that the dynamic behavior is similar to that of the overdamped case. We reproduce the current-Voltage characteristic without using venous glass model or any special function dependence of pinning potential on the external current. The effective height of creep potential is decreasing nonlinearly with increasing external current and the escape rate of vortex from pinning wen is decreasing when the mass of vortex is increasing.Use MCFM and Krameres escape rate method, we investigate the creep behavior of pinned vortices in mixed state with inertial effect been taken into account. We find that the dynamic behavior is similar to that of the overdamped case. We reproduce the current-Voltage characteristic without using venous glass model or any special function dependence of pinning potential on the external current. The effective height of creep potential is decreasing nonlinearly with increasing external current and the escape rate of vortex from pinning wen is decreasing when the mass of vortex is increasing.

关 键 词：质量效应 混合态 超导体 vortex物质 Brownian运 

分 类 号：O511[理学—低温物理]