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Noncentrosymmetric superconductors with various types of pairing interactions are systematically examined with particular focus on phenomena that originate from the differences between Fermi surfaces split by a strong spin-orbit coupling.…

Superconductivity · Physics 2015-06-11 Hiroshi Shimahara

We investigate theoretically how the proximity effect in superconductor/ferromagnet hybrid structures with intrinsic spin-orbit coupling manifests in the density of states and critical temperature. To describe a general scenario, we allow…

Superconductivity · Physics 2015-08-04 Sol H. Jacobsen , Jabir Ali Ouassou , Jacob Linder

This article is a pedagogical review of theoretical studies of noncentrosymmetric superconductors with particular emphasis on the role played by electron correlation, which is important for heavy fermion systems. We survey unique properties…

Superconductivity · Physics 2009-11-13 Satoshi Fujimoto

In noncentrosymmetric superconductors (NCSs), the conversion of a charge current into spin magnetization - the so called magnetoelectric effect - is the direct indicator of the unconventional, mixed-parity order parameter. This paper…

Mesoscale and Nanoscale Physics · Physics 2019-06-18 G. Tkachov

Noncollinear magnetic interfaces introduced in superconductor (SC)/ferromagnet/SC heterostructures allow for spin-flipping processes and are able to generate equal-spin spin-triplet pairing correlations within the ferromagnetic region. This…

Superconductivity · Physics 2015-07-15 Daniel Fritsch , James F. Annett

The heavy-fermion system $\mathrm{UTe_2}$ is a candidate for spin-triplet superconductivity, which is of considerable interest to quantum engineering. Among the outstanding issues is the nature of the pairing state. A recent surprising…

Superconductivity · Physics 2021-12-30 Lei Chen , Haoyu Hu , Christopher Lane , Emilian M. Nica , Jian-Xin Zhu , Qimiao Si

The coupling between two ferromagnets separated by a superconductor has been mostly investigated for the case of Cooper pairs with spin-singlet symmetry. Here, we consider a spin-triplet superconductor with chiral pairing. By full…

Superconductivity · Physics 2024-08-20 Alfonso Romano , Canio Noce , Mario Cuoco

Despite being of fundamental importance and potential interest for topological quantum computing, spin-triplet superconductors remain rare in solid state materials after decades of research. In this work, we present a general mechanism for…

Superconductivity · Physics 2022-07-22 Valentin Crépel , Liang Fu

The long-range spin-triplet supercurrent transport is an interesting phenomenon in the superconductor/ferromagnet ($S/F$) heterostructure containing noncollinear magnetic domains. Here we study the long-range superharmonic Josephson current…

Superconductivity · Physics 2015-10-27 Hao Meng , Jiansheng Wu , Xiuqiang Wu , Mengyuan Ren , Yajie Ren

A small number of superconductors are believed to exhibit intrinsic spin triplet pairing, and they are often discussed in terms of a simple, $^3$He-like picture where ferromagnetic spin fluctuations provide the "glue". However, in some…

Superconductivity · Physics 2022-04-08 Andreas Kreisel , Yundi Quan , P. J. Hirschfeld

Whereas there exists considerable evidence for the conversion of singlet Cooper pairs into triplet Cooper pairs in the presence of inhomogeneous magnetic fields, recent theoretical proposals have suggested an alternative way to exert…

Superconductivity · Physics 2018-06-06 N. Banerjee , J. A. Ouassou , Y. Zhu , N. A. Stelmashenko , J. Linder , M. G. Blamire

In recent years, substantial progress has been made regarding the application of quasiclassical theory on superconducting hybrid structures. This theoretical framework is reliant on a proper set of boundary conditions in order to describe…

Superconductivity · Physics 2019-08-07 Morten Amundsen , Jacob Linder

In non-centrosymmetric superconductors, where the crystal structure lacks a centre of inversion, parity is no longer a good quantum number and an electronic antisymmetric spin-orbit coupling (ASOC) is allowed to exist by symmetry. If this…

Superconductivity · Physics 2018-02-22 M. Smidman , M. B. Salamon , H. Q. Yuan , D. F. Agterberg

The design of spin-transport based devices such as magnon transistors or spin valves will require multilayer systems composed of different magnetic materials with different physical properties. Such layered structures can show various…

Materials Science · Physics 2022-03-23 Verena Brehm , Martin Evers , Ulrike Ritzmann , Ulrich Nowak

This work discusses theoretically the interplay between the superconducting and ferromagnetic proximity effects, in a diffusive normal metal strip in contact with a superconductor and a non-uniformly magnetized ferromagnetic insulator. The…

Superconductivity · Physics 2011-10-18 Audrey Cottet

Spin excitations that soften near the onset of magnetic order have long been known to act as `paramagnon' pairing glue that can drive spin-triplet superconductivity. Recent findings of superconductivity in graphene bilayers and trilayers,…

Superconductivity · Physics 2023-06-21 Zhiyu Dong , Leonid Levitov , Andrey V. Chubukov

The paramagnetic properties in non-centrosymmetric superconductors with and without antiferromagnetic (AFM) order are investigated with focus on the heavy Fermion superconductors, CePt_3Si, CeRhSi_3 and CeIrSi_3. First, we investigate the…

Superconductivity · Physics 2009-11-13 Youichi Yanase , Manfred Sigrist

We analyze the proximity effect of superconductor/ferromagnet nanostructures and point out that the scattering of quasiparticle of spin-triplet pairs by local magnetic moments leads to large resistance peak slightly below the…

Superconductivity · Physics 2011-03-14 Lin He

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…

Superconductivity · Physics 2017-05-17 Jabir Ali Ouassou , Avradeep Pal , Mark Blamire , Matthias Eschrig , Jacob Linder

Graphene and transition metal dichalcogenide flat-band systems show similar phase diagrams, replete with magnetic and superconducting phases. An abiding question has been whether magnetic ordering competes with superconductivity or…

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