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We theoretically investigate the generation of spin current from a uniformly rotating body with impurity scattering on the basis of the spin dependent transport equation. The spin current is created mainly in the radial direction when a…

Mesoscale and Nanoscale Physics · Physics 2015-05-27 Mamoru Matsuo , Jun'ichi Ieda , Eiji Saitoh , 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

Using the wave nature of the electrons, we demonstrate that a transverse spin current can be generated simply by the diffraction through a single slit in the spin-orbital coupling system of the two-dimensional electron gas. The diffracted…

Mesoscale and Nanoscale Physics · Physics 2010-11-19 Chyh-Hong Chern , Cheng-Ju Lin

We demonstrate that spin current can be generated by an ac voltage in a one-channel quantum wire with strong repulsive electron interactions in the presence of a non-magnetic impurity and uniform static magnetic field. In a certain range of…

Mesoscale and Nanoscale Physics · Physics 2007-08-28 Bernd Braunecker , D. E. Feldman , Feifei Li

Spin and charge currents can be generated by an ac voltage through a one-channel quantum wire with strong electron interactions in a static uniform magnetic field. In a certain range of low voltages, the spin current can grow as a negative…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Bernd Braunecker , D. E. Feldman

We study nonequilibrium spin dynamics in differentially rotating systems, deriving an effective Hamiltonian for conduction electrons in the comoving frame. In contrast to conventional spin current generation mechanisms that require…

Mesoscale and Nanoscale Physics · Physics 2025-02-19 Takumi Funato , Shunichiro Kinoshita , Norihiro Tanahashi , Shin Nakamura , Mamoru Matsuo

Generation of spin current from lattice distortion dynamics in metals is studied with special attention on the effect of spin-orbit coupling. Treating the lattice distortion by local coordinate transformation, we calculate spin current and…

Mesoscale and Nanoscale Physics · Physics 2018-07-23 Takumi Funato , Hiroshi Kohno

Spin current plays a central role in spintronics. In particular, finding more efficient ways to generate spin current has been an important issue and studied actively. For example, representative methods of spin current generation include…

Mesoscale and Nanoscale Physics · Physics 2017-06-28 Keita Hamamoto , Motohiko Ezawa , Kun Woo Kim , Takahiro Morimoto , Naoto Nagaosa

Spin current--a flow of electron spins without a charge current--is an ideal information carrier free from Joule heating for electronic devices. The celebrated spin Hall effect, which arises from the relativistic spin-orbit coupling,…

Strongly Correlated Electrons · Physics 2019-10-09 Makoto Naka , Satoru Hayami , Hiroaki Kusunose , Yuki Yanagi , Yukitoshi Motome , Hitoshi Seo

The spin-orbit interaction is frequently the mechanism by which spin and charge are coupled for spintronic applications. The discovery of spin, a century ago, relied on spin-charge coupling by a magnetic field gradient; this mechanism has…

Mesoscale and Nanoscale Physics · Physics 2023-08-01 Nicholas J. Harmon , Emma Z. Kurth , Dana Coleman , Lana Flanigan

We demonstrate theoretically that a charge current and a spin current are generated by spin dynamics in the presence of spin-orbit interaction in the perturbative regime. We consider a general spin-orbit interaction including the spatially…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Akihito Takeuchi , Gen Tatara

The covariant Dirac equation and its solutions show that rotation and acceleration can be used to generate and control spin currents.

Quantum Physics · Physics 2015-06-15 Giorgio Papini

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

Spin-current generation by fluid motion is theoretically investigated. Based on quantum kinetic theory, the spin-diffusion equation coupled with fluid vorticity is derived. We show that spin currents are generated by the vorticity gradient…

Mesoscale and Nanoscale Physics · Physics 2017-07-12 Mamoru Matsuo , Yuichi Ohnuma , Sadamichi Maekawa

Spin pumping is an interfacial spin current generation from the ferromagnetic layer to the non-magnetic metal at its interface. The polarization of the pumped spin current $\textbf{J}_s \propto \textbf{m}\times \dot{\textbf{m}}$ depends on…

Mesoscale and Nanoscale Physics · Physics 2023-10-25 Adam B. Cahaya

Coupling between conduction electrons and localized magnetization is responsible for a variety of phenomena in spintronic devices. This coupling enables to generate spin currents from dynamical magnetization. Due to the nonlinearity of…

Mesoscale and Nanoscale Physics · Physics 2015-07-23 Takaharu Tashiro , Saki Matsuura , Akiyo Nomura , Shun Watanabe , Keehoon Kang , Henning Sirringhaus , Kazuya Ando

It is shown that the flow of electric current in an altermagnet results in the formation of a homogeneous electron spin orientation in the sample. The spin of the conduction electrons generated in altermagnets with $d$-wave spin-momentum…

Mesoscale and Nanoscale Physics · Physics 2025-03-18 L. E. Golub , L. Šmejkal

We predict the appearance of a persistent spin current in a two-dimensional electron gas formed at the interface of multiferroic oxides with a transverse helical magnetic order. No charge current is generated. This is the result of an…

Mesoscale and Nanoscale Physics · Physics 2009-07-20 Chenglong Jia , Jamal Berakdar

Modern spintronics relies on the generation of spin currents through spin-orbit coupling. The spin-current generation has been believed to be triggered by current-induced orbital dynamics, which governs the angular momentum transfer from…

Mesoscale and Nanoscale Physics · Physics 2023-02-07 Hiroki Hayashi , Daegeun Jo , Dongwook Go , Tenghua Gao , Satoshi Haku , Yuriy Mokrousov , Hyun-Woo Lee , Kazuya Ando

We investigate the spin-pumping-induced electric current on the surface of a three-dimensional topological insulator hybridized with a ferromagnet, namely, ferromagnetic topological insulator. In order to do this, we establish the…

Mesoscale and Nanoscale Physics · Physics 2020-05-29 Yusuke Hama , Kentaro Nomura
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