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We present a semiclassical theory of spin-diffusion in a ferromagnetic metal subject to a temperature gradient. Spin-flip scattering can generate pure thermal spin currents by short-circuiting spin channels while suppressing spin…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 Moosa Hatami , Gerrit E. W. Bauer , Saburo Takahashi , Sadamichi Maekawa

Spin-orbit coupling enables charge currents to give rise to spin currents and vice versa, which has applications in non-volatile magnetic memories, miniature microwave oscillators, thermoelectric converters and Terahertz devices. In the…

Mesoscale and Nanoscale Physics · Physics 2020-03-18 Angie Davidson , Vivek P. Amin , Wafa S. Aljuaid , Paul M. Haney , Xin Fan

The magnetic field which induced by the thermo-electric current in metals was detected and measured using of a flux-gate magnetometer. It is shown that the application of a temperature gradient on a metal rod gives rise to a circulating…

General Physics · Physics 2014-03-11 B. V. Vasiliev

We study theoretically the detection and possible utilization of electric current-induced mechanical torques in ferromagnetic-normal metal heterostructures that are generated by spin-flip scattering or the absorption of transverse spin…

Mesoscale and Nanoscale Physics · Physics 2010-01-01 Alexey A. Kovalev , Gerrit E. W. Bauer , Arne Brataas

Current-induced torques on ferromagnetic nanoparticles and on domain walls in ferromagnetic nanowires are normally understood in terms of transfer of conserved spin angular momentum between spin-polarized currents and the magnetic…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 P. M. Haney , R. A. Duine , A. S. Nunez , A. H. MacDonald

A theoretical framework is proposed for the spin-current driven synchronized self-oscillations in ferromagnets in the spin Hall geometry. The spin current generated by the spin Hall effect in a bottom nonmagnetic heavy metal excites a…

Mesoscale and Nanoscale Physics · Physics 2018-09-17 Tomohiro Taniguchi

We have measured the statistical properties of magnetic reversal in nanomagnets driven by a spin-polarized current. Like reversal induced by a magnetic field, spin-transfer-driven reversal near room temperature exhibits the properties of…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 E. B. Myers , F. J. Albert , J. C. Saneky , E. Bonet , R. A. Buhrman , D. C. Ralph

Intrinsic spin currents are encountered in noncentrosymmetric crystals without any external electric fields; these currents are caused by spin-orbit interaction. In this paper, various theoretical aspects of this phenomenon in bulk…

Materials Science · Physics 2024-11-11 Ilja Turek

An experimental protocol is presented that allows the entropy generated by spin-transfer to be measured. The effect of a strong spin-polarized current injected on a ferromagnetic nanostructure is investigated with focusing on the…

Mesoscale and Nanoscale Physics · Physics 2008-08-05 J. -E. Wegrowe , Q. Anh Nguyen , T. L. Wade

Using a semiclassical approach, we study the persistent magnetization current of a mesoscopic ferrimagnetic ring in a nonuniform magnetic field. At zero temperature, there exists persistent spin current because of the quantum fluctuation of…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Jing-Nuo Wu , Ming-Che Chang , Min-Fong Yang

Ferromagnetism is an exciting phase of matter exhibiting strongly correlated electron behavior and a standard example of spontaneously broken rotational symmetry: below the Curie temperature, atomic magnets in an isotropic single-domain…

Other Condensed Matter · Physics 2018-04-06 E. Solano-Carrillo

Recently thermally created pure spin currents were predicted for Zeeman-split superconductor/normal metal heterostructures. Here it is shown that this "thermospin" current can lead to an accumulation of a pure spin imbalance in a system.…

Superconductivity · Physics 2017-10-04 I. V. Bobkova , A. M. Bobkov

We investigate the spin Seebeck effect and spin pumping in a junction between a ferromagnetic insulator and a magnetic impurity deposited on a normal metal. By the numerical renormalization group calculation, we show that spin current is…

Mesoscale and Nanoscale Physics · Physics 2021-09-15 Tsuyoshi Yamamoto , Takeo Kato , Mamoru Matsuo

We analyze spin-dependent transport through a spin-diode in the presence of spin-flip and under influence of temperature bias. The current polarization and the spin accumulation are investigated in detail by means of reduced density matrix.…

Mesoscale and Nanoscale Physics · Physics 2012-04-10 M. Bagheri Tagani , H. Rahimpour Soleimani

We present a temperature dependent study of the thermal excitation of magnonic spin currents in two-sublattice magnetic materials. Using atomistic spin model simulations, we study the local magnetization profiles in the vicinity of a…

Materials Science · Physics 2017-02-15 Ulrike Ritzmann , Denise Hinzke , Ulrich Nowak

We investigate a spin-electricity conversion effect in a topological insulator/ferromagnet heterostructure. In the spin-momentum-locked surface state, an electric current generates nonequilibrium spin accumulation, which causes a spin-orbit…

Mesoscale and Nanoscale Physics · Physics 2017-04-21 Nobuyuki Okuma , Kentaro Nomura

An electric current flowing in a ferromagnetic metal carries spin angular momentum, i.e. it is spin-polarized. Here, we measure the spin-wave Doppler shift induced by the transfer of angular momentum from the diffusive spin-polarized…

First principles calculations show that electric fields applied to ferromagnets generate spin currents flowing perpendicularly to the electric field. Reduced symmetry in these ferromagnets enables a wide variety of such spin currents.…

Mesoscale and Nanoscale Physics · Physics 2019-07-03 V. P. Amin , Junwen Li , M. D. Stiles , P. M. Haney

We show that a vortex current is created around a skyrmion spin texture under magnetic field due to a radial spin motive force in a two-dimensional metal with localized magnetic moments even in the absence of any superconductivity…

Strongly Correlated Electrons · Physics 2010-07-26 Takao Morinari

We predict that the magnetization direction of a ferromagnet can be reversed by the spin-transfer torque accompanying spin-polarized thermoelectric heat currents. We illustrate the concept by applying a finite-element theory of…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Moosa Hatami , Gerrit E. W. Bauer , Qinfang Zhang , Paul J. Kelly
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