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We calculate the subgap density of states of a disordered single-channel normal metal connected to a superconductor at one end (NS junction) or at both ends (SNS junction). The probability distribution of the energy of a bound state…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 M. Titov , N. A. Mortensen , H. Schomerus , C. W. J. Beenakker

We study a mechanical resonator made of aluminum near the normal to super conductivity phase transition. A sharp drop in the rate of mechanical damping is observed below the critical temperature. The experimental results are compared with…

Superconductivity · Physics 2017-05-24 Oren Suchoi , Eyal Buks

We present theoretical calculations and predictions for the shot noise in voltage biased junctions of $d_{x^2-y^2}$ superconductors and normal metal counter-electrodes. In the clean limit for the d-wave superconductor the shot noise…

Superconductivity · Physics 2009-11-10 Tomas Lofwander , Mikael Fogelstrom , J. A. Sauls

In relatively pure normal samples contacting a superconductor we consider the excess resistance effect (that is a decrease of the total electrical resistance of the sample after transition of the superconducting part into the normal state)…

Condensed Matter · Physics 2009-10-28 A. Kadigrobov , R. Shekhter , M. Jonson

Tunneling conductance spectra between a normal metal / d-wave superconductor junction under the presence of bulk impurities in the superconductor are studied. The quasiclassical theory has been applied to calculate the spatial variation of…

Superconductivity · Physics 2009-11-07 Y. Tanaka , Y. Tanuma , S. Kashiwaya

Mesoscopic superconducting-normal-metal-superconducting (S-N-S) junctions with a large separation between the superconducting electrodes (i.e. wide junctions) exhibit nonequilibrium supercurrents, even at temperatures for which the…

Superconductivity · Physics 2009-10-31 Nathan Argaman

We study the induced odd-frequency pairing states in ballistic normal metal/superconductor (N/S) junctions where a superconductor has even-frequency symmetry in the bulk and a normal metal layer has an arbitrary length. Using the…

Superconductivity · Physics 2009-11-13 Y. Tanaka , Y. Tanuma , A. A. Golubov

We report a theoretical study on the deviations of the Meissner penetration depth $\lambda(T)$ from its London value in d-wave superconductors at low temperatures. The difference arises from low-energy surface Andreev bound states. The…

Superconductivity · Physics 2009-10-31 Yu. S. Barash , M. S. Kalenkov , J. Kurkijarvi

Andreev reflection is investigated in layered anisotropic normal metal / superconductor (N/S) systems in the case of an energy gap \Delta in S not negligible with respect to the Fermi energy E_F, as it probably occurs with high critical…

Superconductivity · Physics 2009-10-31 A. A. Golubov , F. Tafuri

Conventional superconductors respond to external magnetic fields by generating diamagnetic screening currents. However, theoretical work has shown that one can engineer systems where the screening current is paramagnetic, causing them to…

Superconductivity · Physics 2020-02-05 Jabir Ali Ouassou , Wolfgang Belzig , Jacob Linder

We review the mesoscopic transport in a diffusive proximity superconductor made of a normal metal (N) in metallic contact with a superconductor (S). The Andreev reflection of electrons on the N-S interface is responsible for the diffusion…

Condensed Matter · Physics 2009-10-31 H. Courtois , Ph. Gandit , B. Pannetier , D. Mailly

We study suppression of superconductivity by disorder in d-wave superconductors, and predict the existence of (at least) two sequential low temperature transitions as a function of increasing disorder: a d -wave to -wave, and then an s-wave…

Superconductivity · Physics 2009-11-13 B. Spivak , P. Oreto , S. A. Kivelson

The subgap conductivity of a normal-superconductor (NS) tunnel junction is thought to be due to tunneling of two electrons. There is a strong interference between these two electrons, originating from the spatial phase coherence in the…

Condensed Matter · Physics 2009-10-22 F. W. J. Hekking , Yu. V. Nazarov

We consider a planar superconducting-normal-metal (SN) junction with both inelastic and spin-flip scattering processes present. In the diffusive limit, we use a one-dimensional formulation of the Usadel equation to compute the…

Superconductivity · Physics 2024-11-06 Arpit Raj , Patrick A. Lee , Gregory A. Fiete

Within a quasiclassical transport theory for 2D electron system we analyze a recently observed effect of microwave rectification at the boundary between two 2D metals of different carrier densities. Nonlinear response is employed to explain…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Natalya A. Zimbovskaya

We consider physical properties of a superconductor with a recently proposed type of odd-frequency pairing that exhibits diamagnetic Meissner response ("odd-dia state"). Such a state was suggested in order to address stability issues…

Superconductivity · Physics 2015-05-05 Ya. V. Fominov , Y. Tanaka , Y. Asano , M. Eschrig

The ability to induce a sizable gap in the excitation spectrum of a normal layer placed in contact with a conventional superconductor has become increasingly important in recent years in the context of engineering a topological…

Mesoscale and Nanoscale Physics · Physics 2016-07-06 Christopher R. Reeg , Dmitrii L. Maslov

We study the proximity effect in hybrid structures consisting of superconductor and ferromagnetic insulator separated by a normal diffusive metal (S/N/FI structures). These stuctures were proposed to realize the absolute spin-valve effect.…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Daniel Huertas-Hernando , Yu. V. Nazarov

We systematically study the efficiency of the intrinsic superconducting diode effect of several pair-density-wave states that can emerge in two-dimensional $d$-wave metallic altermagnets. To this end, we investigate several scenarios using…

Superconductivity · Physics 2025-10-31 Igor de M. Froldi , Hermann Freire

We study shot noise in mesoscopic diffusive wires between a normal and a superconducting terminal. We particularly focus on the regime, in which the proximity-induced reentrance effect is important. We will examine the difference between a…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Wolfgang Belzig
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