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We theoretically study spin and charge transport induced by a twisted light beam irradiated on a disordered surface of a doped three dimensional topological insulator (TI). We find that various types of spin vortices are imprinted on the…

Mesoscale and Nanoscale Physics · Physics 2016-05-17 Kunitaka Shintani , Katsuhisa Taguchi , Yukio Tanaka , Yuki Kawaguchi

General nonequilibrium quantum transport equations are derived for a coupled system of charge carriers, Dirac spin, isospin (or valley spin), and pseudospin, such as either one of the band, layer, impurity, and boundary pseudospins.…

Mesoscale and Nanoscale Physics · Physics 2019-03-13 Felix A. Buot , Karla B. Rivero , Roland E. S. Otadoy

This article reviews the principles that govern the combined transport of spin, heat, and charge. The extensive thermodynamic quantity associated with spin transport is the magnetization; its Onsager-conjugate force is in general the…

Materials Science · Physics 2021-06-09 Joseph P. Heremans

We study superfluidlike spin transport facilitated by thermal diffusion of magnetic domain walls, where the positive and negative chiralities of domain walls act as opposite topological charges. The topological charge conservation leads to…

Mesoscale and Nanoscale Physics · Physics 2024-07-16 Alexey A. Kovalev , Bo Li , Edward Schwartz

In this work, we study the transport of vorticity on curved dynamical two-dimensional magnetic membranes. We find that topological transport can be controlled by geometrically reducing symmetries, enabling processes absent from flat…

Mesoscale and Nanoscale Physics · Physics 2025-05-27 Chau Dao , Ji Zou , Eric Kleinherbers , Yaroslav Tserkovnyak

A theoretical formulation for spin transport through an antiferromagnetic (AF) insulator is presented in the case driven/detected by direct/inverse spin Hall effect in two heavy metal contacts. The spin signal is shown to be transferred by…

Mesoscale and Nanoscale Physics · Physics 2019-05-15 Gen Tatara , Christian Ortiz Pauyac

We explore, with unprecedented single vortex resolution, the dissipation and motion of vortices in a superconducting ribbon under the influence of an external alternating magnetic field. This is achieved by combing the phase sensitive…

Hybrid superconductor-semiconductor heterostructures are promising platforms for realizing topological superconductors and exploring Majorana bound states physics. Motivated by recent experimental progress, we theoretically study how…

Mesoscale and Nanoscale Physics · Physics 2021-03-15 A. Maiani , R. Seoane Souto , M. Leijnse , K. Flensberg

A nonuniform in-plane Zeeman field can induce spontaneous supercurrents of spin-orbit coupled electrons in superconducting two-dimensional systems and thin films. In this work it is shown that current vortices can be created at the ends of…

Superconductivity · Physics 2020-10-09 A. G. Mal'shukov

We propose a model to explore the dynamics of spin-systems coupled by exchange interaction to the conduction band electrons of a semiconductor material that forms the channel in a ferromagnet/semiconductor/ferromagnet spin-valve structure.…

Mesoscale and Nanoscale Physics · Physics 2008-11-04 L. Siddiqui , D. Saha , S. Datta , P. Bhattacharya

We provide a theoretical description of diffusive charge and spin transport in hybrid devices containing altermagnets. Based on recently derived drift--diffusion equations for coupled charge and spin dynamics and general boundary…

Mesoscale and Nanoscale Physics · Physics 2026-03-17 Nicolás Sigales , Tim Kokkeler , Gonzalo de Polsi , Sebastian Bergeret

The possibility of electrically exciting and detecting magnon currents in magnetic insulators has opened exciting perspectives for transporting spin information in electronic devices. However, the role of the magnetic field and the nonlocal…

Mesoscale and Nanoscale Physics · Physics 2022-01-28 Jialiang Gao , Charles-Henri Lambert , Richard Schlitz , Manfred Fiebig , Pietro Gambardella , Saül Vélez

We consider multi-terminal transport through a flake of rectangular shape of a two-dimensional topological insulator in the presence of an in-plane magnetic field. This system has been shown to be a second-order topological insulator, thus…

Mesoscale and Nanoscale Physics · Physics 2024-02-21 Joseph Poata , Fabio Taddei , Michele Governale

A unified model of vortex tangles is proposed to describe unconventional transport in cuprate high-temperature superconductors, which not only captures the fast vortices scenario at low density, but also predicts a novel mechanism of…

Superconductivity · Physics 2017-06-02 Rong Li , Zhen-Su She

We report on an experimental and theoretical study of nonlocal transport in superconductor hybrid structures, where two normal-metal leads are attached to a central superconducting wire. As a function of voltage bias applied to both…

Superconductivity · Physics 2013-11-15 S. Kolenda , M. J. Wolf , D. S. Golubev , A. D. Zaikin , D. Beckmann

We formulate a quantitative theory of non-local electron transport in three-terminal disordered ferromagnet-superconductor-ferromagnet structures. We demonstrate that magnetic effects have different implications: While strong exchange field…

Superconductivity · Physics 2010-07-29 Mikhail S. Kalenkov , Andrei D. Zaikin

In thin film ferromagnets with perfect easy-plane anisotropy, the component of total spin perpendicular to the easy plane is a good quantum number and the corresponding spin supercurrent can flow without dissipation. In this Letter we…

Mesoscale and Nanoscale Physics · Physics 2014-12-10 Hua Chen , Andrew D. Kent , Allan H. MacDonald , Inti Sodemann

We study the magnon transport in the nonlocal configuration composed of two Pt strips on top of yttrium iron garnet, with and without the presence of RF microwave generated by an on-chip antenna. We find that the spin-Hall induced thermal…

Applied Physics · Physics 2019-10-28 Yabin Fan , Justin T. Hou , Joseph Finley , Se Kwon Kim , Yaroslav Tserkovnyak , Luqiao Liu

The guiding conception of vortex-condensation-driven Mott insulating behavior is central to the theory of the nodal liquid. We amplify our earlier description of this idea and show how vortex condensation in 2D electronic systems is a…

Strongly Correlated Electrons · Physics 2009-10-31 Leon Balents , Matthew Fisher , Chetan Nayak

Improved fabrication techniques have enabled the possibility of ballistic transport and unprecedented spin manipulation in ultraclean graphene devices. Spin transport in graphene is typically probed in a nonlocal spin valve and is analyzed…

Mesoscale and Nanoscale Physics · Physics 2020-05-25 Marc Vila , Jose H. Garcia , Aron W. Cummings , Stephen R. Power , Christoph W. Groth , Xavier Waintal , Stephan Roche