【摘要】 在各向同性的双带GL理论的框架内,研究了块体MgB2的一些超导态参量:包括关联长度ξ(T),临界Cooper对速度υc(T),London穿透深度λ(T)以及临界电流密度jc(T)随温度的变化关系;并将穿透深度λ(T)和临界电流密度jc(T)的理论计算结果和实验数据作了比较,符合得较好.更多还原

【Abstract】 Temperature dependence of the coherent length ξ(T), critical velocity of Cooper pair υ_c(T), london penetration depth λ(T)and critical current density j_c(T) for the bulk superconducting magnesium diboride are studied in the vicinity of T_c by using a two band theory . Theresults of the calculations are in good agreement with experiment.更多还原