合金薄膜的临界磁场

本文把文献2]的理论推广到含有杂质的超导薄膜情形,得出合金薄膜的二极相变临界磁场。本文得到的结果,在2d》ξ₀而l任意时,或者2d《ξ₀而l<<2d时,趋于Гинэбург-Ландау理论;在2d<ξ₀而l>2d时,与Гинэбург-Ландау理论不同(l是杂质所决定的电子平均自由程)。理论符合Blumbers实验。

CRITICAL MAGNETIC FIELD OF A SUPERCONDUCTING ALLOY FILM

In this paper, the theory developed in previous paper is extended to a thin superconducting film containing impurities. The critical magnetic field for the second order phase transition of the superconducting alloy film has been obtained. The results obtained are reduced to those of the Ginzburg-Landau theory when 2d 》ξ₀ with arbitrary l or 2d《ξ₀ with l《2d, but are different when 2d<ξ₀ with l>2d, l being the mean free path of the electrons. The theory agrees with Blumberg's experiment.