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We describe the superconducting proximity effect taking place in a contact between a noncentrosymmetric superconductor and a diffusive normal/ferromagnetic metal within the quasiclassical theory of superconductivity. By solving numerically…

Superconductivity · Physics 2012-11-26 Gaetano Annunziata , Dirk Manske , Jacob Linder

We study triplet pairing correlations induced in an SFS trilayer (where F is a ferromagnet and S an ordinary s-wave superconductor) by spin flip scattering at the interfaces. We derive and solve self consistently the appropriate…

Superconductivity · Physics 2015-05-13 Klaus Halterman , Oriol T. Valls

Conventional spin-singlet superconductivity that deeply penetrates into ferromagnets is typically killed by the exchange interaction, which destroys the spin-singlet pairs. Under certain circumstances, however, superconductivity survives…

Mesoscale and Nanoscale Physics · Physics 2019-03-27 Taketomo Nakamura , Le Duc Anh , Yoshiaki Hashimoto , Shinobu Ohya , Masaaki Tanaka , Shingo Katsumoto

We report the results of a study of superconducting proximity effects in clean Ferromagnet/Ferromagnet/Superconductor (${\rm F_1F_2S}$) heterostructures, where the pairing state in S is a conventional singlet s-wave. We numerically find the…

Superconductivity · Physics 2012-08-09 Chien-Te Wu , Oriol T. Valls , Klaus Halterman

We predict the occurrence of odd frequency equal-spin-triplet correlations at a normal metal-superconductor junction. This result is significant because equal-spin-triplet correlations are associated with the presence of dissipation-less…

Superconductivity · Physics 2021-09-02 Subhajit Pal , Colin Benjamin

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

We consider novel unusual effects in superconductor-ferromagnet (S/F) structures. In particular we analyze the triplet component (TC) of the condensate generated in those systems.This component is odd in frequency and even in the momentum,…

Superconductivity · Physics 2009-11-11 F. S. Bergeret , A. F. Volkov , K. B. Efetov

We present theoretical results on the interplay of magnetic and superconducting orders in diffusive ferromagnet-superconductor-ferromagnet trilayers. The induced triplet superconducting correlations throughout the trilayer lead to an…

Superconductivity · Physics 2009-11-11 Tomas Lofwander , Thierry Champel , Johannes Durst , Matthias Eschrig

In this paper, a microscopic theory of magnetic-interaction-induced pairing in superconductivity of metals was developed on the basis of four idealized assumptions: (1) only a small number of electrons are involved in superconductivity; (2)…

Superconductivity · Physics 2017-01-01 Jinhuan Jiang

We discuss the possibility of coexistence of spin density wave (antiferromagnetism) and triplet superconductivity as a particular example of a broad class of systems where the interplay of magnetism and superconductivity is important. We…

Superconductivity · Physics 2009-11-11 Wei Zhang , C. A. R. Sa de Melo

We demonstrate that in multilayered superconductor-ferromagnet structures a non-collinear alignment of the magnetizations of different ferromagnetic layers generates a triplet superconducting condensate which is odd in frequency. This…

Superconductivity · Physics 2009-11-07 A. F. Volkov , F. S. Bergeret , K. B. Efetov

We theoretically study a finite size $SF_1NF_2$ spin valve, where a normal metal ($N$) insert separates a thin standard ferromagnet ($F_1$) and a thick half-metallic ferromagnet ($F_2$). For sufficiently thin superconductor ($S$) widths…

Superconductivity · Physics 2018-03-12 Klaus Halterman , Mohammad Alidoust

We have studied the proximity-induced superconducting triplet pairing in CoO$_x$/Py1/Cu/Py2/Cu/Pb spin-valve structure (where Py = Ni$_{0.81}$Fe$_{0.19}$). By optimizing the parameters of this structure we found a triplet channel assisted…

The quasiclassical theory in terms of equations for the Green's functions (Eilenberger equations) is generalized in order to allow for quantitative description of the magneto-electric effects and proximity-induced triplet correlations in…

Superconductivity · Physics 2017-09-26 I. V. Bobkova , A. M. Bobkov

We study the Josephson effect and pairing correlations in SFFS junctions that consist of conventional superconductors (S) connected through two metallic monodomain ferromagnets (F) with transparent and spin inactive interfaces. We solve the…

Superconductivity · Physics 2009-07-14 Zorica Popović , Zoran Radović

We discuss the possibility of coexistence of spin density wave (antiferromagnetism) and triplet superconductivity as a particular example of a broad class of systems where the interplay of magnetism and superconductivity is important. We…

Superconductivity · Physics 2007-05-23 Wei Zhang , C. A. R. Sa de Melo

Anomalous features of the proximity effect specific to diffusive normal metal / triplet superconductor (DN/TS) junctions are studied within the quasiclassical Green's function formalism. The pair amplitude $f_{N}$ as a function of energy…

Superconductivity · Physics 2015-06-25 Y. Tanaka , Y. Asano , A. A. Golubov , S. Kashiwaya

The proximity induced pair potential in a topological insulator-superconductor hybrid features an interesting superposition of a conventional spin-singlet component from the superconductor and a spin-triplet one induced by the surface state…

Mesoscale and Nanoscale Physics · Physics 2015-11-24 Pablo Burset , Bo Lu , Grigory Tkachov , Yukio Tanaka , Ewelina M. Hankiewicz , Bjoern Trauzettel

Attaching a superconductor in good contact with a normal metal makes rise to a proximity effect where the superconducting correlations leak into the normal metal. An additional contact close to the first one makes it possible to carry a…

Superconductivity · Physics 2010-06-25 Pauli Virtanen , Tero T. Heikkilä

It is widely perceived that the correlation effect may play an important role in several unconventional superconducting families, such as cuprate, iron-based and heavy-fermion superconductors. The application of high pressure can tune the…

Superconductivity · Physics 2019-02-15 Enyu Wang , Jing Si , Xiyu Zhu , Guan-Yu Chen , Hai Lin , Hai-Hu Wen
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