Valery M. Genkin

Low-frequency response in the surface superconducting state of single-crystal ZrB 12

A large nonlinear response of a single crystal of

Glasslike low-frequency ac response of ZrB 12 and Nb single crystals in the surface superconducting state

{\mathrm{ZrB}}_{12}

AC conductivity of a niobium thin film in a swept magnetic field

to an ac field (frequency

Surface superconducting states in a polycrystalline Mg B 2 sample

40\char21{}2500\phantom{\rule{0.3em}{0ex}}\mathrm{Hz}

AC conductivity of a niobium single crystal in a swept magnetic field

) for

dc and ac magnetic properties of thin-walled superconducting niobium cylinders

{H}_{0}g{H}_{c2}

Nonlinear microwave response of YBaCuO superconducting film

has been observed. Direct measurements of the ac wave form and the exact numerical solution of the Ginzburg-Landau equations, as well as the phenomenological relaxation equation, permit the study of the surface superconducting state dynamics. It is shown that the low-frequency response is defined by transitions between the metastable superconducting states under the action of an ac field. The relaxation rate that determines such transition dynamics is found.

Magnetic moment jumps in flat and nanopatterned Nb thin-walled cylinders

We report experimental studies of the low frequency electrodynamics of ZrB

Giant flux jumps through a thin superconducting nb film in a vortex free region

_{12}

Magnetic flux penetration into finite length thin-walled niobium cylinders

and Nb single crystals. AC susceptibility at frequencies 3 - 1000 Hz have been measured under a dc magnetic field,