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We present the generalized quasiclassical theory of the long-range superconducting proximity effect in heterostructures with strong ferromagnets, where the exchange splitting is of the order of Fermi energy. In the ferromagnet the…

超导电性 · 物理学 2017-09-13 I. V. Bobkova , A. M. Bobkov , M. A. Silaev

We introduce the general formalism to describe spin torques induced by the supercurrents injected from the adjacent superconducting electrodes into the spin-textured ferromagnets. By considering the adiabatic limit for the equal-spin…

超导电性 · 物理学 2018-08-28 I. V. Bobkova , A. M. Bobkov , M. A. Silaev

We study diffusive transport through ferromagnet - normal metal - ferromagnet (F-N-F) systems, with arbitrary but fixed magnetization directions of the ferromagnetic reservoirs and orientations of a magnetic field applied to the normal…

介观与纳米尺度物理 · 物理学 2009-10-31 Daniel Huertas-Hernando , Yu. V. Nazarov , Arne Brataas , Gerrit E. W. Bauer

We study the subgap spin and charge transport in normal metal-ferromagnet-superconductor trilayers induced by bias voltage and/or magnetization precession. Transport properties are discussed in terms of time-dependent scattering theory. We…

介观与纳米尺度物理 · 物理学 2015-05-27 Hans Joakim Skadsem , Arne Brataas , Jan Martinek , Yaroslav Tserkovnyak

In this work, it is considered a nanostructure composed by a quantum dot coupled to two ferromagnets and a superconductor. The transport properties of this system are studied within a generalized mean-field approximation taking into account…

介观与纳米尺度物理 · 物理学 2014-09-19 E. C. Siqueira , P. A. Orellana , A. C. Seridonio , R. C. Cestari , M. S. Figueira , G. G. Cabrera

Efficient spin/charge interconversion is desired to develop innovative spin-based devices. So far, the interconversion has been performed by using heavy atomic elements, strong spin-orbit interaction of which realizes the interconversion…

介观与纳米尺度物理 · 物理学 2021-01-20 Junyeon Kim , Dongwook Go , Hanshen Tsai , Daegeun Jo , Kouta Kondou , Hyun-Woo Lee , YoshiChika Otani

We have studied superconducting properties of the spin-valve thin layer heterostructures CoO$_x$/F1/Cu/F2/Cu/Pb where the ferromagnetic F1 layer was standardly made of Permalloy whereas for the F2 layer we have taken a specially prepared…

The difference in the density of states for up- and down-spin electrons in a ferromagnet (F) results in spin-dependent scattering of electrons at a ferromagnet / nonmagnetic (F/N) interface. In a F/N/F spin-valve, this causes a…

超导电性 · 物理学 2022-01-07 B. Stoddart-Stones , X. Montiel , M. G. Blamire , J. W. A. Robinson

Effects due to the proximity of a superconductor has motivated a lot of research work in the last several decades both from theoretical and experimental point of view. In this review we are going to describe the physics of systems…

介观与纳米尺度物理 · 物理学 2015-06-16 Arijit Saha

The interplay between unconventional superconductivity and altermagnetic order has attracted much attentions. In particular, whether spin-triplet superconductivity can be achieved by suppressing altermagnetism remains an open issue. We…

超导电性 · 物理学 2025-09-15 Xin Ma , Siqi Wu , Zilong Li , Lunhui Hu , Jianhui Dai , Chao Cao

Spin dependent transport in a ferromagnet/superconductor/ferromagnet single electron transistor is studied theoretically with spin accumulation, spin relaxation, gap suppression, and charging effects taken into account. A strong dependence…

介观与纳米尺度物理 · 物理学 2009-11-10 J. Johansson , V. Korenivski , D. B. Haviland , A. Brataas

We discuss the universal spin dynamics in quasi one-dimensional systems including the real spin in narrow-gap semiconductors like InAs and InSb, the valley pseudospin in staggered single-layer graphene, and the combination of real spin and…

介观与纳米尺度物理 · 物理学 2017-10-17 E. A. Fajardo , U. Zülicke , R. Winkler

We report the superconducting properties of the Co$_2$Cr$_{1-x}$Fe$_x$Al$_y$/Cu/Ni/Cu/Pb spin-valve structure which magnetic part comprises the Heusler alloy layer HA = Co$_2$Cr$_{1-x}$Fe$_x$Al$_y$ with a high degree of spin polarization…

By now it is known that in a singlet superconductor/ferromagnet (S/F) structure the superconducting correlations carried by opposite-spin pairs penetrate into the ferromagnet over a short distance of the order of magnetic coherence length.…

超导电性 · 物理学 2015-06-04 I. V. Bobkova , A. M. Bobkov

Coherent quantum transport in ferromagnetic/ semiconductor/ ferromagnetic junctions is studied theoretically within the Landauer framework of ballistic transport. We show that quantum coherence can have unexpected implications for spin…

介观与纳米尺度物理 · 物理学 2009-11-07 F. Mireles , G. Kirczenow

We investigate the proximity spin-orbit and exchange couplings in ABA and ABC trilayer graphene encapsulated within monolayers of semiconducting transition-metal dichalcogenides and the ferromagnetic semiconductor Cr$_2$Ge$_2$Te$_6$.…

介观与纳米尺度物理 · 物理学 2022-03-22 Klaus Zollner , Martin Gmitra , Jaroslav Fabian

We study a triplet spin valve obtained by intercalating a triplet superconductor spacer between two ferromagnetic regions with non-collinear magnetizations. We demonstrate that the magnetoresitance of the triplet spin valve depends on the…

介观与纳米尺度物理 · 物理学 2013-12-02 F. Romeo , R. Citro

We investigate the effect of spin orbit coupling on proximity induced superconductivity in a normal metal attached to a superconductor. Specifically, we consider a heterostructure where the presence of interfaces gives rise to a Rashba spin…

超导电性 · 物理学 2023-05-30 Vivek Mishra , Yu Li , Fu-Chun Zhang , Stefan Kirchner

A theoretical prediction of the spin-dependent electron self-energy and in-plane transport of a two-dimensional electron gas in proximity with a ferromagnetic gate is presented. The application of the predicted spin-dependent properties is…

介观与纳米尺度物理 · 物理学 2009-11-07 C. Ciuti , J. P. McGuire , L. J. Sham

New mechanism of magnetoresistance, based on tunneling-emission of spin polarized electrons from ferromagnets (FM) into semiconductors (S) and precession of electron spin in the semiconductor layer under external magnetic field, is…

材料科学 · 物理学 2009-11-10 A. M. Bratkovsky , V. V. Osipov