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Low temperature transport measurements on superconducting film - normal metal wire - superconducting film (SNS) junctions fabricated on the basis of 6 nm thick superconducting polycrystalline PtSi films are reported. The structures with the…

An all-superconducting bijunction consists of a central superconductor contacted to two lateral superconductors, such that non-local crossed Andreev reflection is operating. Then new correlated transport channels for the Cooper pairs appear…

介观与纳米尺度物理 · 物理学 2013-06-05 T. Jonckheere , J. Rech , T. Martin , B. Douçot , D. Feinberg , R. Mélin

A Josephson junction, formed between two phase-biased superconductors and a normal metal, hosts a discrete spectrum of Andreev bound states (ABS). In this paper, we develop a theory for long ballistic Andreev interferometers in…

介观与纳米尺度物理 · 物理学 2025-01-15 Régis Mélin , Asmaul Smitha Rashid , Morteza Kayyalha

We report the first experimental observation of subgap transport in ferromagnetic insulator/superconductor/insulator/superconductor junctions realized in EuS/Al/AlOx/Al vertical stacks. Differential conductance measurements reveal multiple…

We study theoretically the electronic and transport properties of a diffusive superconductor-normal metal-superconductor (SNS) junction in the presence of a perpendicular magnetic field. We show that the field dependence of the critical…

超导电性 · 物理学 2009-11-13 J. C. Cuevas , F. S. Bergeret

We construct a theory for low-energy quantum transport in normal$\mid$superconductor junctions involving the recently discovered iron-based high-$T_c$ superconductors. We properly take into account both Andreev bound surface states and the…

超导电性 · 物理学 2009-11-13 Jacob Linder , Asle Sudbø

We report a systematic experimental study of mesoscopic conductance fluctuations in superconductor/normal/superconductor (SNS) devices Nb/InAs-nanowire/Nb. These fluctuations far exceed their value in the normal state and strongly depend on…

介观与纳米尺度物理 · 物理学 2009-12-18 T. S. Jespersen , M. L. Polianski , C. B. Soerensen , K. Flensberg , J. Nygaard

Charge transport in a high-transmission single-mode long SINIS junction (S stands for superconductor, I is an insulator, and N is a normal metal) is considered in the limit of low bias voltages and low temperatures. The kinetic equation for…

超导电性 · 物理学 2007-05-23 N. B. Kopnin J. Voutilainen

We evaluate the differential conductance measured in a scanning tunneling microscopy (STM) setting at arbitrary electron transmission between an STM tip and a two-dimensional (2D) superconductor with arbitrary gap structure. Our analytical…

超导电性 · 物理学 2023-05-30 P. O. Sukhachov , Felix von Oppen , L. I. Glazman

Electrical transport through a normal metal / superconductor contact at biases smaller than the energy gap can occur via the reflection of an electron as a hole of opposite wave vector. The same mechanism of electron-hole reflection gives…

超导电性 · 物理学 2009-11-10 Guy Deutscher

Andreev reflection between a normal metal and a superconductor whose order parameter exhibits quantum phase fluctuations is examined. The approach chosen is non perturbative in the tunneling Hamiltonian and enables to probe the whole range…

超导电性 · 物理学 2009-11-07 P. Devillard , R. Guyon , T. Martin , I. Safi , B. K. Chakraverty

Phase-coherent diffusive transport through mesoscopic hybrid superconductor/normal metal tunneling structures is investigated. For a N-s-S two-barrier tunneling system with bulk S and N electrodes coupled by a mesoscopic superconducting…

超导电性 · 物理学 2009-09-25 A. V. Zaitsev , A. F. Volkov , S. W. D. Bailey , C. J. Lambert

Non-linear charge transport in SIS Josephson junctions has a unique signature in the shuttled charge quantum between the two superconductors. In the zero-bias limit Cooper pairs, each with twice the electron charge, carry the Josephson…

介观与纳米尺度物理 · 物理学 2016-02-09 Yuval Ronen , Yonatan Cohen , Jung-Hyun Kang , Arbel Haim , Maria-Theresa Rieder , Moty Heiblum , Diana Mahalu , Hadas Shtrikman

We study mesoscopic fluctuations and weak localization correction to the supercurrent in Josephson junctions with coherent diffusive electron dynamics in the normal part. Two kinds of junctions are considered: a chaotic dot coupled to…

介观与纳米尺度物理 · 物理学 2008-03-10 M. Houzet , M. A. Skvortsov

Phase- and voltage bias-sensitive quasiparticle transport at a double $NIS_1IS_2$ interface is considered. The barriers $I$ range from tunnel to transparent, and the intermediate region $S_1$ has a width comparable to the superconducting…

介观与纳米尺度物理 · 物理学 2014-04-16 David Gosselin , Gaston Hornecker , Régis Mélin , Denis Feinberg

We analyze the nonlinear transport properties of a bilayer exciton condensate that is contacted by four metallic leads by calculating the full counting statistics of electron transport for arbitrary system parameters. Despite its formal…

介观与纳米尺度物理 · 物理学 2012-05-01 H. Soller , F. Dolcini , A. Komnik

The dc Josephson current across a multi-channel SNS junction is computed by summing contributions from sub-gap Andreev bound states, as well as from continuum states propagating within the superconducting leads. We show that, in a long…

强关联电子 · 物理学 2014-08-05 Domenico Giuliano , Ian Affleck

Thermal and charge transport in the diffusive normal metal(DN) / insulator / $s$-, $d$- and p-wave superconductor junctions are studied for various situations, where we have used the Usadel equation with Nazarov's generalized boundary…

超导电性 · 物理学 2009-11-11 T. Yokoyama , Y. Tanaka , A. A. Golubov , Y. Asano

We present a theory for the full distribution of current fluctuations in incoherent diffusive superconducting junctions, subjected to a voltage bias. This theory of full counting statistics of incoherent multiple Andreev reflections is…

介观与纳米尺度物理 · 物理学 2009-11-13 P. Samuelsson

Quantitative description of charge transport across tunneling and break-junction devices with novel superconductors encounters some problems not present, or not as severe for traditional superconducting materials. In this work, we explain…

超导电性 · 物理学 2016-08-11 E. Zhitlukhina , I. Devyatov , O. Egorov , M. Belogolovskii , P. Seidel