Coherent charge transport in metallic proximity structures
TLDR
In this paper, the authors developed a detailed microscopic analysis of electron transport in normal diffusive conductors in the presence of proximity-induced superconducting correlations and calculated the linear conductance of the system, the profile of the electric field and the densities of states.Abstract:
We develop a detailed microscopic analysis of electron transport in normal diffusive conductors in the presence of proximity-induced superconducting correlations. We calculated the linear conductance of the system, the profile of the electric field, and the densities of states. In the case of transparent metallic boundaries the temperature-dependent conductance has a nonmonotonic ``reentrant'' structure. We argue that this behavior is due to nonequilibrium effects occurring in the normal metal in the presence of both superconducting correlations and the electric field. Low transparent tunnel barriers suppress nonequilibrium effects and destroy the reentrant behavior of the conductance. If the wire contains a loop, the conductance shows Aharonov-Bohm oscillations with a period ${\mathrm{\ensuremath{\Phi}}}_{0}$=h/2e as a function of the magnetic flux \ensuremath{\Phi} inside the loop. The amplitude of these oscillations also demonstrates the reentrant behavior. It vanishes at T=0 and decays as 1/T at relatively large temperatures. The latter behavior is due to low-energy correlated electrons which penetrate deep into the normal metal and ``feel'' the effect of the magnetic flux \ensuremath{\Phi}. We point out that the density of states and thus the ``strength'' of the proximity effect can be tuned by the value of the flux inside the loop. Our results are fully consistent with recent experimental findings.read more
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Odd triplet superconductivity and related phenomena in superconductor-ferromagnet structures
TL;DR: In this article, the triplet component of the condensate generated by superconductor-ferromagnet structures is considered, which is odd in frequency and even in momentum, making it insensitive to nonmagnetic impurities.
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Opportunities for mesoscopics in thermometry and refrigeration: Physics and applications
TL;DR: In this paper, a review of the thermal properties of mesoscopic structures is presented based on the concept of electron energy distribution, and, in particular, on controlling and probing it, and an immediate application of solidstate refrigeration and thermometry is in ultrasensitive radiation detection, which is discussed in depth.
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Quasiclassical Green’s function approach to mesoscopic superconductivity
Wolfgang Belzig,Frank K. Wilhelm,Christoph Bruder,Christoph Bruder,Gerd Schön,Andrei D. Zaikin +5 more
TL;DR: In this paper, the properties of mesoscopic normal metal/superconductor heterostructures are described in the framework of quasiclassical many-body techniques, both in equilibrium and nonequilibrium situations.
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Weak links in high critical temperature superconductors
Francesco Tafuri,John R. Kirtley +1 more
TL;DR: In this article, a review of high-critical temperature superconducting Josephson junctions is presented, with a flexible phenomenological background, which collects ideas on the Josephson effect in the presence of d-wave pairing for different types of barriers.
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Andreev Reflection and Proximity effect
Bernard Pannetier,Hervé Courtois +1 more
TL;DR: The Andreev reflection is the key mechanism for the superconducting proximity effect as discussed by the authors, which provides phasecorrelations in a system of non-interacting electrons atmesoscopic scales.
References
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Numerical Recipes in FORTRAN
TL;DR: The Diskette v 2.04, 3.5'' (720k) for IBM PC, PS/2 and compatibles [DOS] Reference Record created on 2004-09-07, modified on 2016-08-08.