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We present a numerical study of the density of states in a ferromagnet/superconductor junction and the Josephson current in a superconductor/ferromagnet/superconductor junction in the diffusive limit by solving the Usadel equation with…

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

We study theoretically the influence of spin accumulation on superconductivity in a superconductor/ferromagnet bilayer. It is well-known that the superconductivity in S/F bilayers is suppressed by the proximity to a ferromagnet. The spin…

Superconductivity · Physics 2016-11-08 I. V. Bobkova , A. M. Bobkov

We investigate the spin-polarization of the ferromagnetic semiconductor (Ga,Mn)As by point contact Andreev reflection spectroscopy. The conductance spectra are analyzed using a recent theoretical model that accounts for momentum- and…

Materials Science · Physics 2011-02-21 S. Piano , R. Grein , C. J. Mellor , K. Vyborny , R. Campion , M. Wang , M. Eschrig , B. L. Gallagher

We present an analytical study of the proximity effect in ferromagnet/superconductor (F/S) heterostructures, allowing for an arbitrary magnetic exchange energy as well as arbitrary impurity and spin-flip scattering rates within a…

Superconductivity · Physics 2009-11-13 Jacob Linder , Malek Zareyan , Asle Sudbø

The description of the proximity effect in superconducting/ferromagnetic heterostructures requires to use spin-dependent boundary conditions. Such boundary conditions must take into account the spin dependence of the phase shifts acquired…

Superconductivity · Physics 2009-11-13 Audrey Cottet

We study the physical properties of a ballistic heterostructure made of a ferromagnet (FM) and a spin-triplet superconductor (TSC) with a layered structure stacking along the direction perpendicular to the planes where a chiral px+ipy…

Superconductivity · Physics 2013-10-25 Damien Terrade , Paola Gentile , Mario Cuoco , Dirk Manske

Motivated by the experimental detection of superconductivity in the low-carrier density half-Heusler compound YPtBi, we study the pairing instabilities of three-dimensional strongly spin-orbit coupled semimetals with a quadratic band…

Superconductivity · Physics 2018-01-03 Lucile Savary , Jonathan Ruhman , Jörn W. F. Venderbos , Liang Fu , Patrick A. Lee

As charge carriers traverse a single superconductor ferromagnet interface they experience an additional spin-dependent phase angle which results in spin mixing and the formation of a bound state called the Andreev Bound State. This state is…

Superconductivity · Physics 2017-03-29 K. A. Yates , D. Prabhakaran , M. Egilmez , J. W. A. Robinson , L. F. Cohen

We investigate the effect of an inhomogeneous exchange field on the proximity effect in superconductor-ferromagnet hybrid structures within the quasi-classical theory of superconductivity. As an example we study the proximity effect in a…

Superconductivity · Physics 2007-05-23 T. Champel , M. Eschrig

The recent development of superconducting spintronics has revealed the spin-triplet superconducting proximity effect from a spin-singlet superconductor into a spin-polarized normal metal. In addition recently superconducting junctions using…

Mesoscale and Nanoscale Physics · Physics 2023-09-25 Sadashige Matsuo , Kento Ueda , Shoji Baba , Hiroshi Kamata , Mizuki Tateno , Javad Shabani , Christopher J. Palmstrøm , Seigo Tarucha

The interface between a ferromagnetic metal and an organic molecular semiconductor, commonly referred to as a spinterface, is an important component for advancing spintronic technologies. Hybridization of the ferromagnetic-metal surface d…

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

Studies of the superconducting proximity effect in normal conductor/superconductor $(N/S)$ junctions almost universally assume no effective electron-electron coupling in the $N$ region. While such an approximation leads to a simple…

Superconductivity · Physics 2015-05-20 Oriol T. Valls , Matthew Bryan , Igor Zutic

We investigate the coupling between two singlet superconductors separated by a half-metallic magnet. The mechanism behind the coupling is provided by the rotation of the quasiparticle spin in the superconductor during reflection events at…

Superconductivity · Physics 2009-11-07 M. Eschrig , J. Kopu , J. C. Cuevas , Gerd Schön

Proximity effect in thin-film superconductor (S)/magnet heterostructures with different types of magnets including ferromagnets, antiferromagnets and altermagnets is widely considered in the framework of an effective model, where the…

Superconductivity · Physics 2026-02-16 V. A. Bobkov , G. A. Bobkov , I. V. Bobkova

Half-Heusler compounds with 18 valence electrons per unit cell are well-known non-magnetic semiconductors. Employing first-principles electronic band structure calculations, we study the interface properties of the half-Heusler…

Materials Science · Physics 2023-02-10 Emel Gurbuz , Sukanya Ghosh , Ersoy Sasioglu , Iosif Galanakis , Ingrid Mertig , Biplab Sanyal

The influence of the spin-dependent phase shifts (SDPS) associated to the electronic reflection and transmission amplitudes acquired by electrons upon scattering on the potential barrier on the Andreev reflection probability of electron and…

Superconductivity · Physics 2015-05-13 B. P. Vodopyanov

This work is an analytic theoretical study of a 2D semiconductor with a Fermi surface that is split by the Zeeman coupling of electron spins to an external magnetic field in the presence of electron-electron interactions. For the first…

Strongly Correlated Electrons · Physics 2024-03-07 Joel Hutchinson , Dmitry Miserev , Jelena Klinovaja , Daniel Loss

Employing $\textit{ab-initio}$ density functional theory (DFT), we performed a systematic investigation of the electronic structures and the magnetic properties of atomic bilayers composed of a 4$d$ transition-metal layer (Rh, Pd and Ru)…

Materials Science · Physics 2023-12-08 Souvik Paul , Stefan Heinze

We investigate a one--dimensional wire of interacting electrons connected to one--dimensional noninteracting leads in the absence and in the presence of a backscattering potential. The ballistic wire separates the charge and spin parts of…

Strongly Correlated Electrons · Physics 2009-10-31 Inès Safi , H. J. Schulz