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Mesoscopic superconductivity, proximity effects and phase coherent
charge transport in normal-superconducting metallic structures,
macroscopic quantum phenomena and charging effects in ultrasmall
metallic junctions, quantum fluctuations and phase transitions in
low dimensional superconductors and Josephson junction arrays,
phase transitions in disordered systems, quantum tunneling with
dissipation, nonequilibrium superconductivity, Josepson effects,
including superconductors with unconventional pairing, weak localization.
The main results:
Effect of overscreening in normal-superconducting proximity
systems, microscopic theory of macroscopic quantum phenomena
with dissipation in various metallic structures, Zener
tunneling with dissipation in mesoscopic Josephson junctions,
theory of Coulomb blockade in metallic junctions in the
strong tunneling regime, theory of quantum dissipative phase
transitions in Josephson junction arrays, theory of the
Wohlleben effect in superconducting ceramics, microscopic
theory of Josephson effects in d-wave superconductors,
microscopic theory of superconductivity and parity effect in
ultrasmall metallic particles, microscopic theory of quantum
phase slips in quasi-one-dimensional superconducting wires,
microscopic theory of charge transport and nonequilibrium
effects in ballistic proximity SNS junctions, effect of
quantum decoherence in disordered mesoscopic conductors.
Current interests:
electron-electron interaction and localization in low
dimensional disordered metals, strong tunneling and
Coulomb blockade in mesoscopic metallic grains,
superconductor-insulator phase transition in two
dimensional superconducting films.
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