Nonlocal Free Energy of a Spatially Inhomogeneous Superconductor  

作　　者：K.V.Grigorishin B.I.Lev 

机构地区：[1]Boholyubov Institute for Theoretical Physics of the Ukrainian National Academy of Sciences,14-b Metrolohichna str.Kiev-03680,Ukraine

出　　处：《Communications in Theoretical Physics》2012年第5期879-892,共14页理论物理通讯（英文版）

摘　　要：The microscopic approach is developed for obtaining of the free energy of a superconductor based on direct calculation of the vacuum amplitude.The free energy functional of the spatially inhomogeneous superconductor in a magnetic field is obtained with help of the developed approach.The obtained functional is generalization of GinzburgLandau functionals for any temperature,for arbitrary spatial variations of the order parameter and for the nonlocality of a magnetic response and the order parameter.Moreover,the nonlocality of the magnetic response is the consequence of order parameter's nonlocality.The extremals of this functional are considered in the explicit form in the low-and high-temperature limit at the condition of slowness of spatial variations of the order parameter.

关 键 词：uncoupling of correlations vacuum amplitude order parameter magnetic response NONLOCALITY 

分 类 号：O511.4[理学—低温物理]