SIMULATION ON LOCAL FLUX CREEP IN TYPE-Ⅱ SUPERCONDUCTORS

• 来源期刊: 中国物理（英文版）
• 年，卷（期）: 2000,（2）
• 所属期刊栏目: CONDENSED MATTER：ELECTRONIC STRUCTURE，ELECTRICAL
• 页码范围: 141-148
• 页数: 8页
• 语种: 英文

摘要

Using C programming language,we have wsimulated the fulx creep process in nonideal type-II superconductors.Global and ocal magnetization curves are calculated and the logarithmic time dependence of local magnetic induction B under a constant external field is examined.The effects of nonuniform pinning potential and self-organizaed criticality (SOC).The form of hysteresis loops is dependent on the magnetic filed sweep rate.SOC can account for the occurrence of fluctuation to a certain extent and nonuniform pinning potential can enhance the fluctuation