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相关论文: Study of proximity effects in superconductor/ferro…

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This work is devoted to experimental study of influence of superconductivity (S) on ferromagnetism (FM) (inverse proximity effects) with the help of Polarized Neutron Reflectivity. Combining meausurements of specular and diffuse intensities…

超导电性 · 物理学 2008-01-28 Yu. N. Khaidukov , Yu. V. Nikitenko , V. L. Aksenov

A resonant enhancement of the neutron standing waves is proposed to use in order to increase the magnetic neutron scattering from a "superconductor/ferromagnet"(S/F) bilayer. The model calculations show that usage of this effect allows to…

超导电性 · 物理学 2015-05-18 Yu. N. Khaydukov , Yu. V. Nikitenko , L. Bottyan , A. Ruehm , V. L. Aksenov

Polarized neutron reflectometry is used to study the magnetic proximity effect in a superconductor/ferromagnet (SC/FM) system of composition Cu(32nm)/V(40nm)/Fe(1nm)/MgO. In contrast to previous studies, here a single SC/FM bilayer, is…

We review the present status of the experimental and theoretical research on the proximity effect in heterostructures composed of superconducting (S) and ferromagnetic (F) thin films. First, we discuss traditional effects originating from…

超导电性 · 物理学 2007-05-23 K. B. Efetov , I. A. Garifullin , A. F. Volkov , K. Westerholt

A strong mutual influence of superconductors (S) and ferromagnetic (F) conductors in hybrid F/S (Ni/Al) nanostructures is observed. The magnitude of a proximity-induced conductance on the F-side is more than two orders larger than that…

超导电性 · 物理学 2009-10-31 V. T. Petrashov , I. A. Sosnin , I. Cox , A. Parsons , C. Troadec

Here we report on a feasibility study aiming to explore the potential of Polarized Neutron Reflectometry (PNR) for detecting the inverse proximity effect in a single superconducting/ferromagnetic bilayer. Experiments, conducted on the…

The proximity effect in mesoscopic ferromagnet/superconductor ($FS$) Ni/Al structures of various geometries was studied experimentally on both $F$- and $S$-sides of the structures. Samples with a wide range of interface transparency were…

超导电性 · 物理学 2007-05-23 V. T. Petrashov , I. A. Sosnin , I. Cox , A. Parsons , C. Troadec

The inverse proximity effect, i.e. the induction of a magnetic moment in the superconductor in superconductor-ferromagnet (S/F) junctions is studied theoretically. We present a microscopic approach which combines a model Hamiltonian with…

超导电性 · 物理学 2009-11-11 F. S. Bergeret , A. Levy Yeyati , A. Martin-Rodero

We study a magnetic proximity effect at superconductor (S) - ferromagnet (F) interface. It is shown that due to an exchange of electrons between the F and S metals ferromagnetic correlations extend into the superconductor, being dependent…

超导电性 · 物理学 2009-11-07 V. N. Krivoruchko , E. A. Koshina

We have used spin-polarized neutron reflectometry to investigate the magnetization profile of superlattices composed of ferromagnetic Gd and superconducting Nb layers. We have observed a partial suppression of ferromagnetic (F) order of Gd…

We study the proximity effects near the interface between a d-wave superconductor (S) and a ferromagnet (F) or an antiferromagnet (AF). The S-side (F and AF-side) is described by the attractive (repulsive) Hubbard model, and the Bogoliubov…

强关联电子 · 物理学 2009-10-31 Kazuhiro Kuboki

We observe large amplitude changes in the resistance of ferromagnetic (F) wires at the onset of superconductivity of adjacent superconductors (S). New sharp peaks of large amplitude are found in the magnetoresistance of the F-wires. We…

超导电性 · 物理学 2009-10-31 V. T. Petrashov , I. A. Sosnin , C. Troadec , I. Cox , A. Parsons

$\mathrm{YBa_2Cu_3O_7/La_{2/3}Ca_{1/3}MnO_3}$ superconducting/ferromagnetic (SC/FM) multilayers have been studied by neutron reflectometry. Evidence for a characteristic difference between the structural and magnetic depth profiles is…

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…

超导电性 · 物理学 2012-08-09 Chien-Te Wu , Oriol T. Valls , Klaus Halterman

We study two different superconductor-ferromagnet (S/F) structures. We consider first a Josephson junction which consists of two S/F bilayers separated by an insulating layer. We show that for an antiparallel alignment of the magnetization…

超导电性 · 物理学 2009-11-13 F. S. Bergeret , A. F. Volkov , K. B. Efetov

Considerable evidence for proximity-induced triplet superconductivity on the ferromagnetic side of a superconductor-ferromagnet (S-F) interface now exists; however, the corresponding effect on the superconductor side has hardly been…

超导电性 · 物理学 2015-09-02 Yoav Kalcheim , Oded Millo , Angelo Di Bernardo , Avardeep Pal , Jason W. A. Robinson

Ferromagnetic proximity effect is studied in InAs nanowire (NW) based quantum dots (QD) strongly coupled to a ferromagnetic (F) and a superconducting (S) lead. The influence of the F lead is detected through the splitting of the spin-1/2…

介观与纳米尺度物理 · 物理学 2010-11-03 L. Hofstetter , S. Csonka , A. Geresdi , M. Aagesen , J. Nygard , C. Schonenberger

We have measured the electrical transport of submicron ferromagnets (Ni) in contact with a mesoscopic superconductor (Al) for a range of interface resistances. In the geometry measured, the interface and the ferromagnet are measured…

介观与纳米尺度物理 · 物理学 2009-10-31 J. Aumentado , V. Chandrasekhar

We consider the proximity effects in hybrid superconductor (S) - ferromagnet (F) structures drawing attention to the induced ferromagnetism of the S metal. The analysis is based on a quasiclassical theory of proximity effect for metals in…

超导电性 · 物理学 2007-05-23 V. N. Krivoruchko , V. N. Varyukhin

We present an extensive theoretical investigation of the proximity effects that occur in Ferromagnet/Superconductor ($F/S$) systems. We use a numerical method to solve self consistently the Bogoliubov-de Gennes equations in the continuum.…

超导电性 · 物理学 2009-11-07 Klaus Halterman , Oriol T. Valls
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