二硼化镁的拆对临界电流密度
超导电性
2009-11-07 v1
摘要
通过脉冲直流输运测量，在二硼化镁的整个温度范围内确定了其拆对临界电流密度j_{d}。在固定的低电流密度j值下，电阻转变温度Tc以经典的\Delta T_{C}(j)/T_{C}(0) \propto -[j/j_{d}(0)]^{2/3}方式移动，预测的j_{d}(0) \approx 2 \times 10^{7}IV$）曲线直接测量的j_{d}(0)具有相似的值，并且整体温度依赖性j_{d}(T)和大小与Ginzburg-Landau理论一致。关键词：对，拆对，退对，超导体，超导电性，通量，磁通量子，涡旋，mgb2
引用
@article{arxiv.cond-mat/0212108,
title = {The pair-breaking critical current density of magnesium diboride},
author = {Milind N. Kunchur and Sung-Ik Lee and W. N. Kang},
journal= {arXiv preprint arXiv:cond-mat/0212108},
year = {2009}
}
备注
Submitted to Phys. Rev. Lett. Related preprints/reprints by our group can be found on http://www.physics.sc.edu/kunchur