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We predict a spin echo in electron transport through layered ferromagnetic-normal-ferromagnetic metal structures: whereas a spin current polarized perpendicular to the magnetization direction decays when traversing a single homogeneous…

介观与纳米尺度物理 · 物理学 2009-11-10 Arne Brataas , Gergely Zarand , Yaroslav Tserkovnyak , Gerrit E. W. Bauer

Conventional and spin-related thermoelectric effects in transport through a magnetic tunnel junction with a large-spin impurity, such as a magnetic molecule or atom, embedded into the corresponding barrier are studied theoretically in the…

介观与纳米尺度物理 · 物理学 2014-11-11 Maciej Misiorny , Józef Barnaś

We study the effects of electron-electron interactions on the transport properties of a junction of three quantum wires enclosing a magnetic flux. The wires are modeled as single channel spin-1/2 Tomonaga-Luttinger liquids. The system…

介观与纳米尺度物理 · 物理学 2009-01-22 Chang-Yu Hou , Claudio Chamon

We have investigated the spin current polarization without the external magnetic field in the resonant tunneling diode with the emitter and quantum well layers made from the ferromagnetic GaMnN. For this purpose we have applied the…

介观与纳米尺度物理 · 物理学 2014-04-03 P. Wójcik , J. Adamowski , M. Wołoszyn , B. J. Spisak

The polarization of conduction electron spins due to an electrical current is observed in strained nonmagnetic semiconductors using static and time-resolved Faraday rotation. The density, lifetime, and orientation rate of the…

介观与纳米尺度物理 · 物理学 2007-05-23 Y. Kato , R. C. Myers , A. C. Gossard , D. D. Awschalom

We study time-dependent electronic and spin transport through an electronic level connected to two leads and coupled with a single-molecule magnet via exchange interaction. The molecular spin is treated as a classical variable and precesses…

介观与纳米尺度物理 · 物理学 2013-07-24 Milena Filipovic , Cecilia Holmqvist , Federica Haupt , Wolfgang Belzig

Indirect long range interactions between localized magnetic moments are in metals mediated by itinerant electrons. In insulators and semi-conductor, such interactions need to be small, if not negligible, due to the absence of mediating…

其他凝聚态物理 · 物理学 2026-04-17 J. Fransson

Theory of electron-acoustic single phonon scattering has been reconsidered. It is assumed that the non-degenerate semiconductor has a spherical parabolic band structure. In the basis of the reconsideration there is a phenomenon of the…

材料科学 · 物理学 2015-06-15 S. V. Melkonyan , A. L. Harutyunyan , T. A. Zalinyan

We theoretically investigate the angular and spin dependent transport in normal-metal/helical-multiferroic/ferromagnetic heterojunctions. We find a tunneling anisotropic magnetoresistance (TAMR) effect due to the spiral magnetic order in…

介观与纳米尺度物理 · 物理学 2015-05-18 Chenglong Jia , Jamal Berakdar

We propose measurements of low-frequency noise in the tunneling current through a single molecule with a spin as an experimental probe for identifying a mechanism of the spin-dependent tunneling. A specific tail near the zero frequency in…

介观与纳米尺度物理 · 物理学 2009-11-10 Y. M. Galperin , V. I. Kozub , V. M. Vinokur

The single-spin memory effect is considered within a minimal polaron model describing a single-level quantum dot interacting with a vibron and weakly coupled to ferromagnetic leads. We show that in the case of strong electron-vibron and…

介观与纳米尺度物理 · 物理学 2015-05-13 Dmitry A. Ryndyk , Pino D'Amico , Klaus Richter

The dynamics of a single spin embedded in the tunnel junction (quantum point contact) between ferromagnets is addressed. Using the Keldysh technique, we derive a quantum Langevin equation. As a consequence of the spin-polarization in the…

介观与纳米尺度物理 · 物理学 2011-11-09 J. Fransson , Jian-Xin Zhu

We have studied the magnetoresistance (TMR) of tunnel junctions with electrodes of La2/3Sr1/3MnO3 and we show how the variation of the conductance and TMR with the bias voltage can be exploited to obtain a precise information on the spin…

材料科学 · 物理学 2016-08-16 M. Bowen , A. Barthélémy , M. Bibes , E. Jacquet , J. -P. Contour , A. Fert , F. Ciccacci , L. Dùo , R. Bertacco

The correlation between the magnetic moment in ferromagnetic alloys and the tunneling spin polarization in ferromagnet-insulator-superconductor tunneling experiments has been a mystery. The measured spin polarization for Fe, Co, Ni, and…

材料科学 · 物理学 2009-10-31 Tat-Sang Choy , Jian Chen , Selman Hershfield

Electric currents carrying a net spin polarization are widely used in spintronics, whereas globally spin-neutral currents are expected to play no role in spin-dependent phenomena. Here we show that, in contrast to this common expectation,…

介观与纳米尺度物理 · 物理学 2021-12-06 Ding-Fu Shao , Shu-Hui Zhang , Ming Li , Chang-Beom Eom , Evgeny Y. Tsymbal

We investigate spin-orbit torques on magnetization in an insulating ferromagnetic (FM) layer that is brought into a close proximity to a topological insulator (TI). In addition to the well-known field-like spin-orbit torque, we identify an…

介观与纳米尺度物理 · 物理学 2019-07-03 R. J. Sokolewicz , I. A. Ado , M. I. Katsnelson , P. M. Ostrovsky , M. Titov

Spin-orbit interaction in quantum wires leads to a spin resonance at low temperatures, even in the absence of an external dc magnetic field. We study the effect of electron-electron interaction on the resonance. This interaction is strong…

强关联电子 · 物理学 2013-10-03 Oleg A. Tretiakov , K. S. Tikhonov , V. L. Pokrovsky

Electron spin resonance (ESR) is usually interpreted as a single-particle phenomenon protected from the effect of many-body correlations. We show that this is not the case in a two-dimensional Fermi liquid (FL) with spin-orbit coupling…

介观与纳米尺度物理 · 物理学 2016-02-17 Saurabh Maiti , Muhammad Imran , Dmitrii L. Maslov

In a recent experiment, Hirjibehedin {\it et al.} [Science {\bf 317}, 1199 (2007)] performed inelastic tunneling spectroscopy of a single iron atom absorbed on a nonmagnetic substrate. The observed steps in the differential conductance…

介观与纳米尺度物理 · 物理学 2010-08-16 Björn Sothmann , Jürgen König

An ideal layered $\hat{x}$-polarized antiferromagnet (AFM) between two antialigned $\pm \hat{z}$ polarized ferromagnetic (FM) contacts transmits no current due to a $\pi$ phase difference of the matrix elements coupling the spin degenerate…

介观与纳米尺度物理 · 物理学 2020-07-22 Nima Djavid , Roger K. Lake