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The fluctuating superconducting correlations emerging in dirty hybrid structures in conditions of the strong proximity effect are demonstrated to affect the validity range of the widely used formalism of Usadel equations at mesoscopic…

Superconductivity · Physics 2016-10-12 A. S. Mel'nikov , A. I. Buzdin

The proximity effect and the Josephson current in a superconductor-insulator-ferromagnet-superconductor (SIFS) junction are investigated within the framework of the quasiclassical Eilenberger equations. This investigation allows us to…

Superconductivity · Physics 2011-10-20 N. G. Pugach , M. Yu. Kupriyanov , E. Goldobin , R. Kleiner , D. Koelle

Heterostructures consisting of a cuprate superconductor YBa2Cu3O7x and a ruthenate/manganite (SrRuO3/La0.7Sr0.3MnO3) spin valve have been studied by SQUID magnetometry, ferromagnetic resonances and neutron reflectometry. It was shown that…

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

In the traditional view, the magnetic moment appearing in the superconducting region is induced by equal-spin triplet superconducting correlations in superconductor ($S$) ferromagnet ($F$) heterostructure with noncollinear magnetization. In…

Superconductivity · Physics 2019-01-15 Hao Meng , Jiansheng Wu , Xiuqiang Wu , Mengyuan Ren , Yajie Ren , Jinbin Yao

We study the proximity effect in superconductor-ferromagnet (SF) structure with a narrow domain wall (DW) at the SF interface. The width of the domain wall is assumed to be larger than the Fermi wave length, but smaller than other…

Superconductivity · Physics 2009-11-13 A. F. Volkov , K. B. Efetov

We study theoretically spontaneous currents and magnetic field induced in a superconductor-ferromagnet (S-F) bilayer due to direct and inverse proximity effects. The induced currents {are Meissner currents that appear even in the absence of…

Superconductivity · Physics 2019-04-17 A. F. Volkov , F. S. Bergeret , K. B. Efetov

We discuss the Josephson effect in strongly spin-polarized ferromagnets where triplet correlations are induced by means of spin-active interface scattering, extending our earlier work [Phys. Rev. Lett. 102, 227005 (2009)] by including…

Superconductivity · Physics 2015-09-09 Roland Grein , Tomas Lofwander , Matthias Eschrig

Charge and spin Josephson currents in a ballistic superconductor-ferromagnet-superconductor junction with spin-triplet pairing symmetry are studied using the quasiclassical Eilenberger equation. The gap vector of superconductors has an…

Superconductivity · Physics 2015-05-19 Yousef Rahnavard , Gholamreza Rashedi , Takehito Yokoyama

Superconductor-Ferromagnet hybrid structures (SF) have attracted much interest in the last decades, due to a variety of interesting phenomena predicted and observed in these structures. One of them is the so-called inverse proximity effect.…

Superconductivity · Physics 2019-10-29 Samme M. Dahir , Anatoly F. Volkov , Ilya M. Eremin

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 spread of the Cooper pairs into the ferromagnet in proximity coupled superconductor - ferromagnet (SF) structures is shown to cause a strong inverse electromagnetic phenomenon, namely, the long-range transfer of the magnetic field from…

Superconductivity · Physics 2018-08-01 S. Mironov , A. S. Mel'nikov , A. Buzdin

Spin-polarized supercurrents can be generated with magnetic inhomogeneity at a ferromagnet/spin-singlet-superconductor interface. In such systems, complex magnetic inhomogeneity makes it difficult to functionalise the spin-polarized…

Superconductivity · Physics 2019-11-04 M. S. Anwar , M. Kunieda , R. Ishiguro , S. R. Lee , C. Sow , J. W. A. Robinson , S. Yonezawa , T. W. Noh , Y. Maeno

We present a study of the proximity effect and the inverse proximity effect in a superconductor$\mid$ferromagnet bilayer, taking into account several important factors which mostly have been ignored in the literature so far. These include…

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

We study peculiarities of proximity effect in clean superconductor -- ferromagnet structures caused by either spatial or momentum dependence of the exchange field. Even a small modulation of the exchange field along the quasiparticle…

Superconductivity · Physics 2015-06-11 A. S. Mel'nikov , A. V. Samokhvalov , S. M. Kuznetsova , A. I. Buzdin

We study proximity effect in a tunnel junction between a bulk superconductor and a thin disordered ferromagnetic layer on its surface. Cooper pairs penetrating from the superconductor into the ferromagnet tend to destabilize its uniform…

Disordered Systems and Neural Networks · Physics 2025-12-10 A. V. Levin , P. M. Ostrovsky

Superconductor/ferromagnet/superconductor heterostructures exhibit a so-called long-range proximity effect provided some layers of conical magnet Holmium are included in the respective interface regions. The Ho layers lead to a spin-flip…

Superconductivity · Physics 2015-04-06 Daniel Fritsch , James F. Annett

The magnetic correlations at the superconductor/ferromagnet (S/F) interfaces play a crucial role in realizing dissipation-less spin-based logic and memory technologies, such as triplet-supercurrent spin-valves and "{\pi}" Josephson…

Noncollinear magnetic interfaces introduced in superconductor (SC)/ferromagnet/SC heterostructures allow for spin-flipping processes and are able to generate equal-spin spin-triplet pairing correlations within the ferromagnetic region. This…

Superconductivity · Physics 2015-07-15 Daniel Fritsch , James F. Annett

The discovery of noncentrosymmetric superconductors, such as CePt$_3$Si, and chiral superconductors, such as Sr$_2$RuO$_4$, calls for experimental methods to identify the presence of spin-triplet pairing. We here demonstrate a method which…

Superconductivity · Physics 2015-05-20 Gaetano Annunziata , Mario Cuoco , Canio Noce , Asle Sudbø , Jacob Linder