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The study of superconductor-ferromagnet interfaces has generated great interest in the last decades, leading to the observation of spin-aligned triplet supercurrents and 0-pi transitions in Josephson junctions where two superconductors are…

We study the electric and thermoelectric transport properties of correlated quantum dots coupled to two ferromagnetic leads and one superconducting electrode. Transport through such hybrid devices depends on the interplay of…

介观与纳米尺度物理 · 物理学 2015-06-19 Krzysztof P. Wojcik , Ireneusz Weymann

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…

超导电性 · 物理学 2009-11-07 A. F. Volkov , F. S. Bergeret , K. B. Efetov

We propose that screened pairing interactions mediated by phonons could give rise to a spin triplet superconductivity in ferromagnetic compounds such as UGe_2. It is pointed out that the pairing interactions include anisotropic components…

超导电性 · 物理学 2009-10-31 Hiroshi Shimahara , Mahito Kohmoto

Proximity effect at superconductor/antiferromagnet (S/AF) interfaces, which manifests itself as generation of Neel-type triplet correlations, leads to sensitivity of the superconducting critical temperature to the mutual orientation of the…

Over the last decade it has been shown that magnetic non-collinearity at a s-wave superconductor/ferromagnet interface is a key ingredient for spin-singlet to spin-triplet pair conversion. This has been verified in several synthetic…

超导电性 · 物理学 2020-04-24 Ekta Bhatia , J. Devine-Stoneman , Zoe H. Barber , J. W. A. Robinson , Kartik Senapati

We present theoretical model for the proximity effect in F-SFF-F structures (F is ferromagnet, S is superconductor) with non-collinear magnetizations vectors in the F-layers and with arbitrary magnitudes of exchange fields. Electrical…

超导电性 · 物理学 2014-01-16 T. Yu. Karminskaya , M. Yu. Kupriyanov , S. L. Prischepa , A. A. Golubov

A general phenomenological theory is presented for the phase behavior of ferromagnetic superconductors with spin-triplet electron Cooper pairing. The theory describes in details the temperature-pressure phase diagrams of real inter-metallic…

超导电性 · 物理学 2012-07-10 Dimo I. Uzunov

We propose that one of the best grounds for the materials design from the viewpoint of {\it electron correlation} such as ferromagnetism, superconductivity is the atomically controlled nanostructures and heterointerfaces, as theoretically…

材料科学 · 物理学 2009-11-10 Hideo Aoki

Generating high-fidelity, tunable entanglement between qubits is crucial for realizing gate-based quantum computation. In superconducting circuits, tunable interactions are often implemented using flux-tunable qubits or coupling elements,…

Interfacing superconductors with strongly spin-polarized magnetic materials opens the possibility to discover new spintronic devices in which spin-triplet Cooper pairs play a key role. Motivated by the recent derivation of spin-polarized…

超导电性 · 物理学 2017-05-17 Jabir Ali Ouassou , Avradeep Pal , Mark Blamire , Matthias Eschrig , Jacob Linder

We present a new switching mechanism that utilizes the proximity coupling between the surface spin texture of a Weyl semimetal and a superconductor, in a Weyl semimetal/superconductor/Weyl semimetal trilayer heterostructure. We show that…

介观与纳米尺度物理 · 物理学 2020-08-20 Narayan Mohanta , A. Taraphder , Elbio Dagotto , Satoshi Okamoto

We experimentally demonstrate the existence of magnetic coupling between two ferromagnets separated by a thin Pt layer. The coupling remains ferromagnetic regardless of the Pt thickness, and exhibits a significant dependence on temperature.…

材料科学 · 物理学 2015-06-11 W. L. Lim , N. Ebrahim-Zadeh , H. G. E. Hentschel , S. Urazhdin

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

Recently a long ranged superconductor/ferromagnet (S/F) proximity effect has been reported in Co crystalline nanowires [1, Nature, 6 389 (2010)]. Since the authors of [1] take care to avoid the existence of magnetic domains, the triplet…

介观与纳米尺度物理 · 物理学 2010-11-16 F. Konschelle , J. Cayssol , A. Buzdin

Recent $\mu$SR measurements revealed remarkable signatures of spontaneous magnetism coexisting with superconductivity in elemental rhenium. Here we provide a quantitative theory that uncovers the nature of the superconducting instability by…

超导电性 · 物理学 2023-10-12 Gábor Csire , James Annett , Jorge Quintanilla , Balázs Újfalussy

We investigate a silicon single-electron transistor (SET) in a metal-oxide-semiconductor (MOS) structure by applying a magnetic field perpendicular to the sample surface. The quantum dot is defined electrostatically in a point contact…

介观与纳米尺度物理 · 物理学 2015-05-13 Binhui Hu , C. H. Yang

We study the transient phenomena appearing in a subgap region of the double quantum dot coupled in series between the superconducting and normal metallic leads, focusing on the development of the superconducting proximity effect. For the…

介观与纳米尺度物理 · 物理学 2021-05-03 R. Taranko , K. Wrześniewski , B. Baran , I. Weymann , T. Domański

Quantum dots and single-molecule transistors may exhibit level crossings induced by tuning external parameters such as magnetic field or gate voltage. For Coulomb blockaded devices, this shows up as an inelastic cotunneling threshold in the…

介观与纳米尺度物理 · 物理学 2013-01-10 Chiara Stevanato , Martin Leijnse , Karsten Flensberg , Jens Paaske

The superconductivity of quasi-one-dimensional electrons in the magnetic field is studied. The system is described as the one-dimensional electrons with no frustration due to the magnetic field. The interaction is assumed to be attractive…

凝聚态物理 · 物理学 2009-10-28 Yasumasa Hasegawa , Mitake Miyazaki