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The spin Hall effect (SHE) generates spin currents within nonmagnetic materials. Previously, studies of the SHE have been motivated primarily to understand its fundamental origin and magnitude. Here we demonstrate, using measurement and…

材料科学 · 物理学 2013-05-30 Luqiao Liu , O. J. Lee , T. J. Gudmundsen , D. C. Ralph , R. A. Buhrman

The generation and manipulation of carrier spin polarization in semiconductors solely by electric fields has garnered significant attention as both an interesting manifestation of spin-orbit physics as well as a valuable capability for…

介观与纳米尺度物理 · 物理学 2008-06-03 N. P. Stern , D. W. Steuerman , S. Mack , A. C. Gossard , D. D. Awschalom

We show that to correctly describe the ultrafast currents in spintronic THz emitters it is necessary to take charge equilibration into account. The charge current which is locally induced by a fs laser pulse and the inverse spin-Hall effect…

介观与纳米尺度物理 · 物理学 2022-08-17 Georg Schmidt , Bikash Das-Mohapatra , Evangelos Th. Papaioannou

We present experimental results on the displacement of a domain wall by injection of a dc current through the wall. The samples are 1 micron wide long stripes of a CoO/Co/Cu/NiFe classical spin valve structure. The stripes have been…

材料科学 · 物理学 2009-11-07 J. Grollier , D. Lacour , V. Cros , A. Hamzic , A. Vaures , A. Fert , D. Adam , G. Faini

This paper reports on the improvement of the differential current gain in the spin-torque transistor based on two independent innovations, viz.the use of magnetic insulators and the spin Hall effect. Since, except for a few examples, spin…

介观与纳米尺度物理 · 物理学 2014-08-22 Takahiro Chiba , Gerrit E. W. Bauer , Saburo Takahashi

We report a comprehensive study on the intrinsic spin Hall conductivity (SHC) of semimetals MoTe2 and WTe2 by ab initio calculation. Large SHC and desirable spin Hall angles have been discovered, due to the strong spin orbit coupling effect…

材料科学 · 物理学 2019-03-06 Jiaqi Zhou , Junfeng Qiao , Arnaud Bournel , Weisheng Zhao

The demonstration of the generation and control of a pure spin current (without net charge flow) by electric fields and/or temperature gradient has been an essential leap in the quest for low-power consumption electronics. The key issue of…

介观与纳米尺度物理 · 物理学 2013-10-10 Chenglong Jia , Jamal Berakdar

In magnetic systems, angular momentum is carried by spin and orbital degrees of freedom. Nonlocal devices, comprising heavy-metal nanowires on magnetic insulators like yttrium iron garnet (YIG), enable angular momentum transport via…

The measured Hall angle in a ferromagnetic nanomagnet shows a substantial non-linear dependence on an external magnetic field, which cannot be explained by adopted mechanisms of the Ordinary and Anomalous (AHE) Hall effects implying a…

介观与纳米尺度物理 · 物理学 2020-10-07 Vadym Zayets , Andrey S. Mishchenko

Electron-magnon coupling at the interface between a normal metal and a magnetically ordered insulator modifies the electrical conductivity of the normal metal, an effect known as spin-Hall magnetoresistance. It can also facilitate…

介观与纳米尺度物理 · 物理学 2026-01-21 Oliver Franke , Duje Akrap , Piet W. Brouwer

In this work we report observation of in-plane current induced out-of-plane magnetic field driven torque in spin valve structure. Since ferromagnet has high spin orbit coupling it is expected to be the source of spin-orbit-torque as it…

介观与纳米尺度物理 · 物理学 2018-06-27 Arnab Bose , Duc Duong Lam , Swapnil Bhuktare , Sutapa Dutta , Hanuman Singh , Shinji Miwa , Ashwin A. tulapurkar

We demonstrate a spin pump to generate pure spin current of tunable intensity and polarization in the absence of charge current. The pumping functionality is achieved by means of an ac gate voltage that modulates the Rashba constant…

介观与纳米尺度物理 · 物理学 2009-08-06 Chia-Hui Lin , Chi-Shung Tang , Yia-Chung Chang

We systematically measured the DC voltage V_ISH induced by spin pumping together with the inverse spin Hall effect in ferromagnet/platinum bilayer films. In all our samples, comprising ferromagnetic 3d transition metals, Heusler compounds,…

Spin-charge conversion via inverse spin Hall effect (ISHE) is essential for enabling various applications of spintronics. The spin Hall response usually follows a universal scaling relation with longitudinal electric resistivity and has…

We report on the observation of the acoustic spin Hall effect that facilitates lattice motion induced spin current via spin orbit interaction (SOI). Under excitation of surface acoustic wave (SAW), we find a spin current flows orthogonal to…

介观与纳米尺度物理 · 物理学 2021-02-02 Takuya Kawada , Masashi Kawaguchi , Takumi Funato , Hiroshi Kohno , Masamitsu Hayashi

Weyl semimetals are playing a major role in condensed matter physics due to exotic topological properties, and their coexistence with ferromagnetism may lead to enhanced spin-related phenomena. Here, the inverse spin Hall effect (ISHE) in…

材料科学 · 物理学 2021-03-19 L. Leiva , S. Granville , Y. Zhang , S. Dushenko , E. Shigematsu , T. Shinjo , R. Ohshima , Y. Ando , M. Shiraishi

The spin-orbit interaction couples the electrons' motion to their spin. Accordingly, passing a current in a material with strong spin-orbit coupling generates a transverse spin current (spin Hall effect, SHE) and vice-versa (inverse spin…

We performed photoinduced inverse spin Hall effect (ISHE) measurements on a Pt/Ge(001) junction at room temperature. The spin-oriented electrons, photogenerated at the direct gap of Ge using circularly polarized light, provide a net spin…

介观与纳米尺度物理 · 物理学 2015-06-15 Federico Bottegoni , Alberto Ferrari , Stefano Cecchi , Marco Finazzi , Franco Ciccacci , Giovanni Isella

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…

介观与纳米尺度物理 · 物理学 2007-08-28 Bernd Braunecker , D. E. Feldman , Feifei Li

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…