층 구조를 갖는 초전도체내의 자기 다발선계에서의 열적 요동의 효과

Effects of Thermal Fluctuations on Vortices in a Layered Superconductor

We apply the nonperturbative parquet approximation method, which was previously used to study the effect of thermal fluctuations in two-dimensional vortex systems, to vortices in a layered superconductor. We set up the parquet equations for the Lawrence-Doniach model and present two different numerical methods to solve them. The results for a superconductor consisting of two and four layers are also discussed in connection with an observed first order transition line in the vortex liquid regime.