BCS机制下各向异性超导体的涡旋格子

The Vortex Lattices of Anisotropic Superconductorsin the BCS Mechanism

基于由扩展的BCS理论所得到的各向异性非均匀系的完整GL方程,用尺度变换方法给出在新尺度系统挡磁场H→Hc2时类同的各向同性非线性GL方程.在稳定的三角涡旋格子形态下又变换到原尺度系统的形态,在不同条件下呈现平行四边形、三角形、长方形、正方形、菱形和链状等形态,这些形态在实验上均被观察到.

Based on the complete GL equations for anisotropic inhomogeneous systems obtained by extending BCS theory and by the method of dimensional exchange, the new anisotropic GL equations for the case H→Hc2 were obtained. Thus the forms of vortex lattices in the original systems may be shown by transformation from stable triangular vortex lattices in new dimensional system to the original dimensional system. Those forms under the different conditions in the original system are such as parallelogram, triangular, rectangle, square, rhomb and chain. All those forms of vortex lattices were observed in experiments.