On the field dependence of the vortex core size (2004)
Kogan, V. G., Zhelezina, N. V.
We argue that in clean high-$\kappa$ type II superconductors, the low temperature vortex core size (defined as the coherence length $\xi$) in high fields should decrease with increasing applied field...
Penetration depth anisotropy in two-band superconductors (2003)
Kogan, V. G., Zhelezina, N. V.
The anisotropy of the London penetration depth is evaluated for two-band superconductors with arbitrary inter- and intra-band scattering times. If one of the bands is clean and the other is dirty in...