9 papers · 1 filter
Enhanced vortex heat conductance in mesoscopic superconductors
N. B. Kopnin, A. S. Mel'nikov, V. I. Pozdnyakova +3
Electronic heat transport along the flux lines in a long ballistic mesoscopic superconductor cylinder with a radius of the order of several coherence lengths is investigated theore…
Resonance energy and charge pumping through quantum SINIS contacts
N. B. Kopnin, A. S. Mel'nikov, V. M. Vinokur
We propose a mechanism of quantum pumping mediated by the spectral flow in a voltage-biased SINIS quantum junction and realized via the sequential closing of the minigaps in the en…
Giant oscillations of energy levels in mesoscopic superconductors
N. B. Kopnin, A. S. Mel'nikov, V. I. Pozdnyakova +3
The interplay of geometrical and Andreev quantization in mesoscopic superconductors leads to giant mesoscopic oscillations of energy levels as functions of the Fermi momentum and/o…
Loss of Andreev Backscattering in Superconducting Quantum Point Contacts
N. B. Kopnin, A. S. Mel'nikov, V. M. Vinokur
We study effects of magnetic field on the energy spectrum in a superconducting quantum point contact. The supercurrent induced by the magnetic field leads to intermode transitions…
Re-entrant localization of single particle transport in disordered Andreev wires
N. B. Kopnin, A. S. Mel'nikov, V. M. Vinokur
We study effects of disorder on the low energy single particle transport in a normal wire surrounded by a superconductor. We show that the heat conductance includes the Andreev dif…
Little-Parks effect and multiquanta vortices in a hybrid superconductor--ferromagnet system
A. Yu. Aladyshkin, A. S. Mel'nikov, D. A. Ryzhov
Within the phenomenological Ginzburg-Landau theory we investigate the phase diagram of a thin superconducting film with ferromagnetic nanoparticles. We study the oscillatory depend…