直流和交流磁场下薄膜屏中约瑟夫森涡旋的非线性动力学
超导电性
2014-10-20 v1
摘要
我们对强直流和交流磁场下垂直于薄膜屏的长约瑟夫森结中的约瑟夫森涡旋进行了详细的数值模拟。通过求解 sine-Gordon 方程,我们计算了磁通子穿透的阈值磁场与频率的函数关系,以及振荡磁通子耗散功率与交流场振幅和频率的函数关系。我们考虑了叠加交流与直流场的影响,以及导致涡旋棘轮动力学的双谐波磁场。这些结果用于评估弱连接晶界对多晶超导体在强电磁场下(特别是薄膜屏和谐振腔)非线性表面电阻的贡献。
引用
@article{arxiv.1410.4606,
title = {Nonlinear dynamics of Josephson vortices in a film screen under dc and ac magnetic fields},
author = {Ahmad Sheikhzada and Alexander Gurevich},
journal= {arXiv preprint arXiv:1410.4606},
year = {2014}
}
备注
This paper has 23 figures and 11 pages in its pdf format. The paper has been published online and will be published in text soon in November in journal of Physica C