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自发磁化的超导π环在电触发下的行为
The reversal of spontaneous magnetization in high T_c superconducting π rings
【摘要】 运用Runge Kutta四步积分法分析了一个双结π环电路在输入脉冲电流触发下自发磁化电流的翻转过程 .发现在适当的参数条件下 ,输入周期性脉冲 ,π环环流会产生周期性翻转现象 ,由正到负和由负到正的翻转将产生不同的输出脉冲 .以此可检验π环自发磁化电流的方向和电触发下的翻转现象
【Abstract】 The reversal of spontaneous magnetization of a superconducting π ring under a pulse current injection has been thoroughly analyzed with the fourth ordered Runge Kutta method. We find that the reversals from negative to positive and from positive to negative will produce different pulse output with a periodic pulse injection and some certain parameters which can give a checkout of directions of the spontaneous magnetization as well as the phenomena of reversal under pulse injection.
【关键词】 π结;
自发磁化;
RungeKutta四步积分法;
【Key words】 junction; spontaneous magnetization; forth ordered Runge Kutta method;
【Key words】 junction; spontaneous magnetization; forth ordered Runge Kutta method;
【基金】 国家重点基础研究项目 (批准号 :G19990 64 60 9)资助的课题~~
- 【文献出处】 物理学报 ,Acta Physica Sinica , 编辑部邮箱 ,2003年07期
- 【分类号】O511.9
- 【下载频次】25