3 papers
cond-mat.supr-con2004
Theory of fluctuations in a two-band superconductor
A. E. Koshelev, A. A. Varlamov, V. M. Vinokur
A theory of fluctuations in two-band superconductor MgB is developed. Since the standard Ginzburg-Landau (GL) approach fails in description of its properties, we generalize i…
cond-mat.supr-con2004
Why magnesium diboride is not described by anisotropic Ginzburg-Landau theory
A. E. Koshelev, A. A. Golubov
It is well established that the superconductivity in the recently discovered superconducting compound MgB resides in the quasi-two-dimensional band (-band) and three-dimen…
cond-mat.supr-con2002
Mixed state of a dirty two-band superconductor: application to MgB_2
A. E. Koshelev, A. A. Golubov
We investigate the vortex state in a two-band superconductor with strong intraband and weak interband electronic scattering rates. Coupled Usadel equations are solved numerically a…