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A conventional superconductor sandwiched between two ferromagnets can maintain coherent equilibrium spin current. This spin supercurrent results from the rotation of odd-frequency spin correlations induced in the superconductor by the…

Superconductivity · Physics 2025-02-10 Risto Ojajärvi , F. S. Bergeret , M. A. Silaev , Tero T. Heikkilä

The presence of a spin-flip potential at the interface between a superconductor and a ferromagnetic metal allows for the generation of equal-spin spin-triplet Cooper pairs. These Cooper pairs are compatible with the exchange interaction…

Superconductivity · Physics 2014-09-02 Daniel Fritsch , James F. Annett

We analyze an interplay between the proximity effect and quantum interference of electrons in hybrid structures superconductor-normal metal-superconductor which contain several insulating barriers. We demonstrate that the dc Josephson…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Artem V. Galaktionov , Andrei D. Zaikin

The dc Josephson current through a long SNS junction receives contributions from both Andreev bound states localized in the normal region as well as from scattering states incoming from the superconducting leads. We show that in the limit…

Superconductivity · Physics 2013-02-20 Domenico Giuliano , Ian Affleck

In recent years, a number of studies have predicted the emergence of a nontrivial proximity effect in superconductor/antiferromagnet (S/AF) heterostructures. This effect is of considerable interest for the efficient integration of…

Superconductivity · Physics 2025-11-18 G. A. Bobkov , V. A. Bobkov , I. V. Bobkova , A. M. Bobkov , A. A. Golubov

Scanning tunneling spectroscopy measurements conducted on epitaxially grown bilayers of half-metallic ferromagnetic La2/3Ca1/3MnO3 (LCMO) on superconducting (SC) (100)YBa2Cu3O7-delta (YBCO) reveal long-range penetration of superconducting…

Superconductivity · Physics 2015-05-20 Yoav Kalcheim , Tal Kirzhner , Gad Koren , Oded Millo

We study proximity effects at ferromagnet superconductor interfaces by self-consistent numerical solution of the Bogoliubov-de Gennes equations for the continuum, without any approximations. Our procedures allow us to study systems with…

Superconductivity · Physics 2009-11-07 Klaus Halterman , Oriol T. Valls

We study the proximity-induced superconducting correlations as well as the local density of states of a ferromagnet, in a ferromagnet/s-wave superconductor heterostructure. We include the effects of spin-flip scattering, non-ideal…

Superconductivity · Physics 2009-11-13 Jacob Linder , Asle Sudbø

The Josephson current in a diffusive superconductor/ferromagnet/superconductor junction with precessing magnetization is calculated within the quasiclassical theory of superconductivity. When the junction is phase-biased, a stationary…

Superconductivity · Physics 2015-03-31 M. Houzet

We have measured a long-range supercurrent in Josephson junctions containing Co (a strong ferromagnetic material) when we insert thin layers of either PdNi or CuNi weakly-ferromagnetic alloys between the Co and the two superconducting Nb…

Superconductivity · Physics 2015-05-14 Trupti S. Khaire , Mazin A. Khasawneh , W. P. Pratt, , Norman O. Birge

Quasiperiodicity has recently been proposed to enhance superconductivity and its proximity effect. At the same time, there has been significant experimental progress in the fabrication of quasiperiodic structures, also in reduced…

Superconductivity · Physics 2024-09-27 Anna Sandberg , Oladunjoye A. Awoga , Annica M. Black-Schaffer , Patric Holmvall

We consider the charge and spin effects in low dimensional superconducting weak links. The first part of the review deals with the effects of electron-electron interaction in Superconductor/Luttinger liquid/Superconductor junctions. The…

Superconductivity · Physics 2009-11-10 Ilya V. Krive , Sergei I. Kulinich , Robert I. Shekhter , Mats Jonson

The production of entangled pairs of electrons in ferromagnet-superconductor-ferromagnet or normal metal-superconductor-normal metal three-terminal structures has aroused considerable interest in the last twenty years. In these studies, the…

Superconductivity · Physics 2021-08-11 Régis Mélin

We present theory of dc Josephson effect in contacts between Fe-based and spin-singlet $s$-wave superconductors. The method is based on the calculation of temperature Green's function in the junction within the tight-binding model. We…

We consider some properties of odd frequency triplet superconducting condensates. In order to describe fluctuations we construct a supermatrix sigma-model for the superconductor/ferromagnet or superconductor/normal-metal structures. We show…

Superconductivity · Physics 2009-11-10 J. E. Bunder , K. B. Efetov

Assuming a Fermi liquid behavior for $s$-conduction electrons, we rewrite the extended Landau-Lifshitz-Gilbert (LLG) equation renormalized by interactions through the Landau parameters $F^{a}_{l}$ ($l=0,1,2 \cdots$) in an explicit form to…

Strongly Correlated Electrons · Physics 2022-10-06 H. B. Brentan , P. F. Farinas

We analyze the effect of low dimensionality on the electrical conductivity ({\sigma}) and Seebeck coefficient (S) in ultra-narrow Si nanowires (NWs) by employing atomistic considerations for the electronic structures and linearized…

Materials Science · Physics 2015-06-16 Neophytos Neophytou , Hans Kosina

The unconventional Josephson coupling in a ferromagnetic weak link between d-wave superconductors is studied theoretically. For strong ferromagnetic barrier influence, the unconventional coupling, with ground state phase difference across…

Superconductivity · Physics 2009-10-31 Z. Radovic , L. Dobrosavljevic--Grujic , B. Vujicic

The Josephson Effect and Superconducting Proximity Effect were observed in Superconductor -Graphene-Superconductor (SGS) Josephson junctions with coherence lengths comparable to the distance between the superconducting leads. By comparing…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Xu Du , Ivan Skachko , Eva Y. Andrei

Proximity effect in thin-film superconductor (S)/magnet heterostructures with different types of magnets including ferromagnets, antiferromagnets and altermagnets is widely considered in the framework of an effective model, where the…

Superconductivity · Physics 2026-02-16 V. A. Bobkov , G. A. Bobkov , I. V. Bobkova
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