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Precessing ferromagnets are predicted to inject a spin current into adjacent conductors via Ohmic contacts, irrespective of a conductance mismatch with, for example, doped semiconductors. This opens the way to create a pure spin source spin…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Arne Brataas , Yaroslav Tserkovnyak , Gerrit E. W. Bauer , Bertrand I. Halperin

Boundary conditions are derived that determine the penetration of spin current through an interface of two non-collinear ferromagnets with an arbitrary angle between their magnetization vectors. We start from the well-known transformation…

Materials Science · Physics 2015-06-25 E. M. Epshtein , Yu. V. Gulyaev , P. E. Zilberman

We consider electrical transport through molecules with Heisenberg-coupled spins arranged in a ring structure in the presence of an easy-axis anisotropy. The molecules are coupled to two metallic leads and a gate. In the charged state of…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Jörg Lehmann , Daniel Loss

We demonstrate that the combined effect of a spatially periodic potential, lateral confinement and spin-orbit interaction gives rise to a quantum ratchet mechanism for spin-polarized currents in two-dimensional coherent conductors. Upon…

Mesoscale and Nanoscale Physics · Physics 2007-11-07 Matthias Scheid , Andreas Pfund , Dario Bercioux , Klaus Richter

When time-reversal symmetry is broken, quantum coherent systems with and without spin rotational symmetry exhibit the same universal behavior in their electric transport properties. We show that spin transport discriminates between these…

Mesoscale and Nanoscale Physics · Physics 2013-07-30 Ph. Jacquod , I. Adagideli

We study the generation of non-equilibrium spin currents in systems with spatially-inhomogeneous magnetic potentials. For sufficiently high current densities, the spin polarization can be transported over distances significantly exceeding…

Condensed Matter · Physics 2009-11-07 Ivar Martin

The recently suggested mechanism [Y. Song and H. Dery, Phys. Rev. Lett. 113, 047205 (2014)] of the three-terminal spin transport is based on the resonant tunneling of electrons between ferromagnetic and normal electrodes via an impurity.…

Mesoscale and Nanoscale Physics · Physics 2016-02-05 Z. Yue , M. E. Raikh

This article reviews spin-dependent transport of carriers in homogenous three-dimensional and two-dimensional semiconductors. We begin with a discussion of optical orientation of electron spins, which allows both the creation and detection…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 R. Winkler

We investigate the transport of active matter system in the presence of a disordered square lattice of half-circles, which is built by removing a fraction of them from the initial full lattice. We consider no external field. We observe a…

Soft Condensed Matter · Physics 2020-02-12 A. D. Borba , J. L. C. Domingos , E. C. B. Moraes , F. Q. Potiguar , W. P. Ferreira

We propose three different mechanisms for pumping spin-polarized currents in a ballistic circuit using a time-dependent magnetic field acting on an asymmetrically connected quantum ring at half filling. The first mechanism works thanks to a…

Mesoscale and Nanoscale Physics · Physics 2014-02-26 Michele Cini , Stefano Bellucci

Spin transport in magnetic tunnel junctions comprising a single magnetic layer in the presence of interfacial spin-orbit interaction (SOI) is investigated theoretically. Due to the presence of interfacial SOI, a current-driven spin torque…

Mesoscale and Nanoscale Physics · Physics 2015-05-30 A. Manchon

Electronic spin current is convertible to magnonic spin current via the creation or annihilation of thermal magnons at the interface of a magnetic insulator and a metal with a strong spin-orbital coupling. So far this phenomenon was…

Mesoscale and Nanoscale Physics · Physics 2017-03-08 Xi-guang Wang , Zhi-xiong Li , Zhen-wei Zhou , Yao-zhuang Nie , Qing-lin Xia , Zhong-ming Zeng , L. Chotorlishvili , J. Berakdar , Guang-hua Guo

We show that the spin-current response of a semiconductor crystal to an external electric field is considerably more complex than previously assumed. While in systems of high symmetry only the spin-Hall components are allowed, in systems of…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Dimitrie Culcer , R. Winkler

We theoretically investigate spin dependent transport in ferromagnetic/normal metal/ferromagnetic single electron transistors by applying master equation calculations using a two dimensional space of states involving spin and charge degrees…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Watson Kuo , C. D. Chen

We consider a system of two spins under a scanning tunneling microscope bias and derive its master equation. We find that the tunneling elements to the electronic contacts (tip and substrate) generate an exchange interaction between the…

Mesoscale and Nanoscale Physics · Physics 2021-08-25 Baruch Horovitz , Carsten Henkel

We theoretically study the interaction of an isolated bimeron skyrmion in quasi-two-dimensional easy-plane magnets with a surrounding spin superfluid associated with spontaneously broken U(1) spin-rotational symmetry, revealing that…

Mesoscale and Nanoscale Physics · Physics 2019-06-06 Se Kwon Kim

Spin pumping provides a fundamental route for dynamical spin transport, yet in its conventional form it produces only linear spin responses at the driving frequency. Recent studies have shown that spin-orbit coupling (SOC) can lift these…

Mesoscale and Nanoscale Physics · Physics 2026-02-17 Ousmane Ly

Strongly interacting one-dimensional fermions form an effective spin chain in the absence of an external lattice potential. We show that the exchange coefficients of such a chain may be locally tuned by properly tailoring the transversal…

Quantum Gases · Physics 2017-08-02 Frank Deuretzbacher , Luis Santos

We theoretically study the renormalization of inertial effects on the spin dependent transport of conduction electrons in a semiconductor by taking into account the interband mixing on the basis of k.p perturbation theory. In our analysis,…

Mesoscale and Nanoscale Physics · Physics 2013-09-06 B. Basu , Debashree Chowdhury

A pure spin current is predicted to occur when an external magnetic field and a linearly inhomogeneous spin-only field are appropriately aligned. Under these conditions (such as originate from nuclear contact hyperfine fields that do not…

Mesoscale and Nanoscale Physics · Physics 2022-09-14 Nicholas J. Harmon , Michael E. Flatté
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