Superheating field of superconductors within Ginzburg-Landau theory
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 $\ensuremath{\kappa}$, the superheating field ${H}_{\mathrm{sh}}$ and the critical momentum ${k}_{c}$ characterizing the wavelength of the instability of the Meissner state to flux penetration. …