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Correlations are fundamental in describing many body systems - not only in natural sciences. However, in experiments, correlations are notoriously difficult to assess on the microscopic scale, especially for electron spins. Here, we…

Mesoscale and Nanoscale Physics · Physics 2022-12-20 Arunav Bordoloi , Valentina Zannier , Lucia Sorba , Christian Schönenberger , Andreas Baumgartner

Spin transport in superconductors offers a compelling platform to merge the dissipationless nature of superconductivity with the functional promise of spin-based electronics. A significant challenge in achieving spin polarisation in…

Mesoscale and Nanoscale Physics · Physics 2025-05-19 Aleix Barrera , Huidong Li , Thomas Gunkel , Jordi Alcalà , Silvia Damerio , Can Onur Avci , Anna Palau

Localized spins of single atoms adsorbed on surfaces have been proposed as building blocks for spintronics and quantum computation devices. However, identifying a way to achieve current-induced switching of spins with very low dissipation…

Mesoscale and Nanoscale Physics · Physics 2024-09-02 Chi Sun , Jacob Linder

During the past 15 years a new field has emerged, which combines superconductivity and spintronics, with the goal to pave a way for new types of devices for applications combining the virtues of both by offering the possibility of…

Superconductivity · Physics 2016-02-02 M. Eschrig

We study the electrodynamics of spin triplet superconductors including dipolar interactions, which give rise to an interplay between the collective spin dynamics of the condensate and orbital Meissner screening currents. Within this theory,…

Splitting of Cooper pairs has recently been realized experimentally for s-wave Cooper pairs. A split Cooper pair represents an entangled two-electron pair state which has possible application in on-chip quantum computation. Likewise the…

Mesoscale and Nanoscale Physics · Physics 2013-01-18 H. Soller , A. Komnik

While spin-triplet pairing remains elusive in nature, there is a growing effort to realize proximity-induced equal-spin triplet superconductivity in junctions with magnetic regions or an applied magnetic field and common $s$-wave…

Superconductivity · Physics 2024-09-19 Chenghao Shen , Jong E. Han , Thomas Vezin , Mohammad Alidoust , Igor Žutić

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…

Mesoscale and Nanoscale Physics · Physics 2013-12-02 F. Romeo , R. Citro

Transport measurements are presented on thin-film superconducting spin-valve systems, where the controlled non-collinear arrangement of two ferromagnetic Co layers can be used to influence the superconducting state of Nb. We observe a very…

We consider the Josephson effect through a thin spin-orbit coupled layer in the presence of an exchange field, and discover a set of supercurrent vortices appearing in the system which can be controllably moved around in the system by…

Superconductivity · Physics 2017-08-16 Morten Amundsen , Jacob Linder

We derive a formalism describing quantum-coherent features of spin-polarized charge current through a partially-polarized spin triplet defect in a $\textit{transverse}$ magnetic field. We predict distinct few-milli-tesla-dc…

Mesoscale and Nanoscale Physics · Physics 2022-01-03 Stephen R. McMillan , Michael E. Flatté

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…

Superconductivity · Physics 2023-10-12 Gábor Csire , James Annett , Jorge Quintanilla , Balázs Újfalussy

Spinful triplet Cooper pairs can be generated from their singlet counterparts available in a conventional superconductor (S) using two or more noncollinear magnetic moments, typically contributed by different magnets in a multilayered…

Mesoscale and Nanoscale Physics · Physics 2023-08-24 Simran Chourasia , Lina Johnsen Kamra , Irina V. Bobkova , Akashdeep Kamra

In this paper we report a direct evidence of the suppression of critical current due to pair-breaking in a superconducting micro-bridge when the measurement is carried out by injecting spin polarised carriers instead of normal electrons. A…

Superconductivity · Physics 2009-10-31 P. Raychaudhuri , P. K. Mal , S. Sarkar , A. R. Bhangale , R. Pinto

We study dissipationless spin transport induced by a charge supercurrent in a monolayer van der Waals superconductor under the applied magnetic field and in a bilayer superconductor/ferromagnet (S/F) heterostructure with no external field.…

Superconductivity · Physics 2024-09-12 G. A. Bobkov , A. M. Bobkov , I. V. Bobkova

Generation and detection of spinful Cooper pairs in conventional superconductors has been intensely pursued by designing increasingly complex magnet-superconductor hybrids. Here, we demonstrate theoretically that magnons with nonzero…

Superconductivity · Physics 2023-07-11 I. V. Bobkova , A. M. Bobkov , Akashdeep Kamra , Wolfgang Belzig

It has been suggested by theoretical works that equal spin-triplet Cooper pairs can be generated in Josephson junctions containing both a ferromagnet and a source of spin-orbit coupling. Our recent experimental work suggested that…

Superconductivity · Physics 2019-06-05 Nathan Satchell , Reza Loloee , Norman O. Birge

In general, conventional superconductivity should not occur in a ferromagnet, though it has been seen in iron under pressure. Moreover, theory predicts that the current is always carried by pairs of electrons in a spin singlet state, so…

Superconductivity · Physics 2009-11-11 R. S. Keizer , S. T. B. Goennenwein , T. M. Klapwijk , G. Miao , G. Xiao , A. Gupta

We consider unconventional magnets with proximity-induced superconductivity and investigate the emergence of superconducting correlations by carrying out a full classification of allowed Cooper pair symmetries. In particular, we focus on…

Superconductivity · Physics 2025-04-22 Kazuki Maeda , Yuri Fukaya , Keiji Yada , Bo Lu , Yukio Tanaka , Jorge Cayao

It is shown that, in a conductor carrying a moderate spin current, singlet pairing can still take place almost as effectively as without a spin current. The system will still be fully gapped for all spin-up and -down single-particle…

Superconductivity · Physics 2007-11-21 Chia-Ren Hu