Superheating field of superconductors within Ginzburg-Landau theory
نویسندگان
چکیده
منابع مشابه
Superheating field of superconductors within Ginzburg-Landau theory
We study the superheating field of a bulk superconductor within Ginzburg-Landau theory, which is valid near the critical temperature. We calculate, as functions of the Ginzburg-Landau parameter κ , the superheating field Hsh and the critical momentum kc characterizing the wavelength of the instability of the Meissner state to flux penetration. By mapping the two-dimensional linear stability the...
متن کاملGinzburg-Landau theory of the superheating field anisotropy of layered superconductors
We investigate the effects of material anisotropy on the superheating field of layered superconductors. We provide an intuitive argument both for the existence of a superheating field, and its dependence on anisotropy, for κ = λ/ξ (the ratio of magnetic to superconducting healing lengths) both large and small. On the one hand, the combination of our estimates with published results using a two-...
متن کاملFluctuations in Superconductors using Landau-Ginzburg Theory
In this paper, we study the fluctuations in superconductors in the framework of Landau-Ginzurg theory. First, we review the formulation of LG theory and derive the LG equations. The we calculate the fluctuation contribution to the saddle point heat capacity, both inside and outside the immediate vicinity of the transition point. Outside the immediate vicinity, we follow the Gaussian integral ca...
متن کاملThe Ginzburg-Landau Theory of Type II superconductors in magnetic field
Thermodynamics of type II superconductors in electromagnetic field based on the Ginzburg Landau theory is presented. The Abrikosov flux lattice solution is derived using an expansion in a parameter characterizing the ”distance” to the superconductor normal phase transition line. The expansion allows a systematic improvement of the solution. The phase diagram of the vortex matter in magnetic fie...
متن کاملContinuous Ginzburg–Landau description of layered superconductors
The behaviour of the order parameter and its effects in intrinsically-layered superconductors are studied within a continuous Ginzburg–Landau model. A simple model of interlayer coupling is proposed in which we suggest that the coupling strength between superconducting and insulating layers may be qualitatively described by a reciprocal of a difference between the order parameters at the respec...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review B
سال: 2011
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.83.094505