Alexey Bezryadin - Academia.edu (original) (raw)

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Papers by Alexey Bezryadin

Bulletin of the American Physical Society, Mar 24, 2011

Bulletin of the American Physical Society, Mar 25, 2011

Physical review, Oct 14, 2016

Physical Review X, Jun 10, 2015

Physical Review B, Jul 9, 2012

Physical review, Sep 11, 2017

Applied Physics Letters, Jun 13, 2011

Physical Review Letters, Feb 28, 2012

Nanotechnology, Sep 5, 2011

Physical Review B, Oct 13, 2010

New Journal of Physics, Jun 13, 2017

arXiv (Cornell University), Mar 11, 2013

arXiv (Cornell University), Feb 1, 2012

arXiv (Cornell University), Sep 28, 2011

ABSTRACT We report a study of hysteretic current-voltage characteristics in superconductor-graphe... more ABSTRACT We report a study of hysteretic current-voltage characteristics in superconductor-graphene-superconductor (SGS) junctions. The stochastic nature of the phase slips is characterized by measuring the distribution of the switching currents. We find that in SGS junctions the dispersion of the switching current scales with temperature as σIT^αG with αG 1/3. This observation is in sharp contrast with the known Josephson junction behavior where σIT^αJ with αJ=2/3. We propose an explanation using a modified version of Kurkijarvi's theory for the flux stability in rf-SQUID and attribute this anomalous effect to the temperature dependence of the critical current which persists down to low temperatures.

Bulletin of the American Physical Society, Mar 20, 2013

ABSTRACT In the superconducting proximity circuits, stochastic switching from the super-current c... more ABSTRACT In the superconducting proximity circuits, stochastic switching from the super-current carrying state to dissipative normal state is triggered by the topological fluctuations of the order parameter - phase slips. We study theoretically switching current statistics in a double-nanowire quantum interferometer as a function of the applied magnetic field perpendicular to the plane of the device. This system is a prototype of the double-slit experiment in optics which allows to probe macroscopic coherence of superconducting condensates. Magnetic field induces Meissner currents in the leads that lock superconducting phases across the wires. As a results phase slips that occur in the wires are not independent. We calculate dispersion of the switching current distribution as well as higher moment and find that they oscillate as the function of the field.