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We study the Josephson effect in a superconductor--ferromagnet--superconductor (SFS) junction with ferromagnetic domains of non-collinear magnetization. As a model for our study we consider a diffusive junction with two ferromagnetic…

Superconductivity · Physics 2007-05-23 B. Crouzy , S. Tollis , D. A. Ivanov

This work explores the constriction and normal Josephson junctions of superconductors within Horndeski's gravitational theory framework. Through a single scalar field of this theory, we provide a dual holographic description via the…

High Energy Physics - Theory · Physics 2025-10-09 Fabiano F. Santos , Henrique Boschi-Filho

We demonstrate that a suspended nanowire forming a weak link between two superconductors can be cooled to its motional ground state by a supercurrent flow. The predicted cooling mechanism has its origins in magnetic field induced inelastic…

Mesoscale and Nanoscale Physics · Physics 2011-05-04 Gustav Sonne , Leonid Y. Gorelik

We discuss the statistics of heat current between two superconductors at different temperatures connected by a generic weak link. As the electronic heat in superconductors is carried by Bogoliubov quasiparticles, the heat transport…

Superconductivity · Physics 2015-03-02 P. Virtanen , F. Giazotto

By measuring the Josephson emission of a diffusive Superconductor-Normal metal-Superconductor (SNS) junction at a finite temperature we reveal a non-trivial sensitivity of the supercurrent to microwave irradiation. We demonstrate that the…

We develop a detailed microscopic theory describing dc Josephson effect and Andreev bound states in superconducting junctions with a half-metal. In such systems the supercurrent is caused by triplet pairing states emerging due to spin-flip…

Superconductivity · Physics 2008-03-29 Artem V. Galaktionov , Mikhail S. Kalenkov , Andrei D. Zaikin

Inspired by a recent experiment, we study the influence of thermal fluctuations on the $I$-$V$ characteristics of a Josephson junction, coupled to a strongly resistive environment. We obtain analytical results in the limit where the…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 I. S. Beloborodov , F. W. J. Hekking , F. Pistolesi

The transition-metal dichalcogenides featuring Ising spin-orbit coupling in so-called Ising superconductors offer a unique system to study the interplay of singlet and triplet superconductivity. The presence of high critical fields,…

Mesoscale and Nanoscale Physics · Physics 2024-11-07 Sourabh Patil , Gaomin Tang , Wolfgang Belzig

We analyze the properties of flat-band superconductor junctions that behave differently from ordinary junctions containing only metals with Fermi surfaces. In particular, we show how in the tunneling limit the critical Josephson current…

Superconductivity · Physics 2025-09-08 P. Virtanen , R. P. S. Penttilä , P. Törmä , A. Díez-Carlón , D. K. Efetov , T. T. Heikkilä

We theoretically study the Josephson effect in a superconductor/normal metal/superconductor junction based on Kekul\'e patterned graphene. For the Kekul\'e-O patterned junctions, a Fermi momentum-splitting Andreev reflection at the…

Mesoscale and Nanoscale Physics · Physics 2022-03-28 W. Zeng , R. Shen

Superconductor-to-metal transition with magnetic field and gate-voltage is studied in a Josephson junction array comprising of randomly distributed lead islands on exfoliated single-layer graphene with a back-gate. The low magnetic-field…

Superconductivity · Physics 2024-08-27 Suraina Gupta , Santu Prasad Jana , Rukshana Pervin , Anjan K. Gupta

Understanding heating and cooling mechanisms in mesoscopic superconductor-semiconductor hybrid devices is crucial for their application in quantum technologies. Owing to the poor thermal conductivity of typical devices, heating effects can…

Mesoscale and Nanoscale Physics · Physics 2024-06-12 Angel Ibabe , Gorm O. Steffensen , Ignacio Casal , Mario Gomez , Thomas Kanne , Jesper Nygard , Alfredo Levy Yeyati , Eduardo J. H. Lee

We calculate the equilibrium Josephson current through a disordered interacting quantum dot described by a Sachdev-Ye-Kitaev model fully contacted by two BCS superconductors, such that all modes of the dot contribute to the coupling, which…

Strongly Correlated Electrons · Physics 2024-10-25 Luca Dell'Anna

We report measurements of the temperature dependence of the critical current in Josephson junctions consisting of conventional superconducting banks of Nb and a weakly ferromagnetic interlayer of a Cu$_x$Ni$_{1-x}$ alloy, with $x$ around…

Superconductivity · Physics 2009-10-31 V. V. Ryazanov , V. A. Oboznov , A. Yu. Rusanov , A. V. Veretennikov , A. A. Golubov , J. Aarts

Joule heating is a non-equilibrium dissipative process that occurs in a normal metal when an electric current flows, in an amount proportional to the metal's resistance. When it is induced by eddy currents resulting from a change in…

Superconductivity · Physics 2020-09-18 J. E. Hirsch

Josephson junctions made of closely-spaced conventional superconductors on the surface of 3D topological insulators have been proposed to host Andreev bound states (ABSs) which can include Majorana fermions. Here, we present an extensive…

Superconductivity · Physics 2014-07-04 C. Kurter , A. D. K. Finck , P. Ghaemi , Y. S. Hor , D. J. Van Harlingen

We have studied mesoscopic Josephson junctions formed by highly $n$-doped InAs nanowires and superconducting Ti/Pb source and drain leads. The current-voltage properties of the system are investigated by varying temperature and external…

Mesoscale and Nanoscale Physics · Physics 2015-03-26 J. Paajaste , M. Amado , S. Roddaro , F. S. Bergeret , D. Ercolani , L. Sorba , F. Giazotto

We theoretically investigate the phase-dependent heat transport of a temperature-biased granular Josephson junction in the presence of a perpendicular magnetic field. We illustrate the influence of geometry of the junction on the thermal…

Superconductivity · Physics 2019-06-13 Elaheh Afsaneha , Heshmatolah Yavari

Since the discovery of the unconventional copper-oxide high-transition-temperature superconductors (HTS), researchers have explored many methods to fabricate superconducting tunnel junctions from these materials for both superconducting…

Superconductivity · Physics 2014-09-18 Shane A. Cybart , E. Y. Cho , T. J. Wong , Björn H. Wehlin , Meng K. Ma , Chuong Huynh , R. C. Dynes

We propose to study frequency dependent intrinsic dissipation in a highly transparent Josephson junction by means of qubit spectroscopy. The spectral density of the effective dissipative bath may contain significant contributions from…

Superconductivity · Physics 2018-10-02 Dmitry S. Golubev , Artem V. Galaktionov , Andrei D. Zaikin
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