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Using circularly polarized light is an alternative to electronic ways for spin injection into materials. Spins are injected at a point of the light illumination, and then diffuse and spread radially due to the in-plane gradient of the spin…

介观与纳米尺度物理 · 物理学 2020-04-29 Di Fan , Rei Hobara , Ryota Akiyama , Shuji Hasegawa

Spin-torque ferromagnetic resonance (ST-FMR) is a common method used to measure spin-orbit torques (SOTs) in heavy metal/ferromagnet bilayer structures. In the course of a measurement, other resonant processes such as spin pumping (SP) and…

介观与纳米尺度物理 · 物理学 2020-08-19 Saba Karimeddiny , Joseph A. Mittelstaedt , Robert A. Buhrman , Daniel C. Ralph

We present measurements of inverse spin Hall effects (ISHEs) in which the conversion of a spin current into a charge current via the ISHE is detected not as a voltage in a standard open circuit but directly as the charge current generated…

介观与纳米尺度物理 · 物理学 2014-06-24 Y. Omori , F. Auvray , T. Wakamura , Y. Niimi , A. Fert , Y. Otani

The spin Hall magnetoresistance (SMR) phenomenon includes the fundamental physics of spin current, and originates from spin accumulation at an interface owing to the spin Hall effect. Although bilayers are the simplest structure exhibiting…

材料科学 · 物理学 2019-05-29 Takumi Yamamoto , Takashi Yanase , Toshihiro Shimada , Taro Nagahama

The development of advanced spintronics devices hinges on the efficient generation and utilization of pure spin current. In materials with large spin-orbit coupling, the spin Hall effect may convert charge current to pure spin current and a…

材料科学 · 物理学 2017-08-16 Sucheta Mondal , Samiran Choudhury , Neha Jha , Arnab Ganguly , Jaivardhan Sinha , Anjan Barman

The magnetic Gilbert damping and spin-orbital to charge interconversion phenomenon play vital role in controlling the modern spintronics device performances. Though the ferromagnets (FMs) and heavy metals (HMs) are considered to be the key…

介观与纳米尺度物理 · 物理学 2024-11-05 Antarjami Sahoo , Swayang Priya Mahanta , Subhankar Bedanta

The spin Hall effect (SHE), which converts a charge current into a transverse spin current, has long been believed to be a phenomenon induced by the spin--orbit coupling. Here, we propose an alternative mechanism to realize the intrinsic…

材料科学 · 物理学 2021-06-22 Yang Zhang , Jakub Zelezny , Yan Sun , Jeroen van den Brink , Binghai Yan

We report the growth of MgO[001]//Fe(6 nm)/MgO(7 nm) and MgO[001]//Fe(6 nm)/Pt(6 nm) by molecular beam epitaxy and show that the full characterization by spin-orbit ferromagnetic resonance (SO-FMR) allows the determination of magnetic…

材料科学 · 物理学 2019-01-30 C. Guillemard , S. Petit-Watelot , S. Andrieu , J. -C. Rojas-Sánchez

We study the intrinsic spin Hall effect (SHE) based on the orbitally degenerate periodic Anderson model, which is an effective model for heavy fermion systems. In the very low resistivity regime, the magnitude of the intrinsic spin Hall…

强关联电子 · 物理学 2010-09-29 Takuro Tanaka , Hirosho Kontani

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

Ultrafast THz radiation generation from ferromagnetic/nonmagnetic bilayer heterostructure-based spintronic emitters generally exploits the conversion from spin- to charge-current within the nonmagnetic layer and its interface with the…

介观与纳米尺度物理 · 物理学 2022-07-14 Sandeep Kumar , Sunil Kumar

We present a comprehensive study of broadband spin pumping utilizing the inverse spin Hall effect phenomena in bilayer samples comprising Ni81Fe19 (15 nm) and NbN (with NbN thickness varying from 20 nm to 140 nm), conducted over a…

Electrical manipulation of magnetization by spin-orbit torque (SOT) has shown promise for realizing reliable magnetic memories and oscillators. To date, the generation of transverse spin current and SOT, whether it is of spin Hall effect…

材料科学 · 物理学 2019-02-20 Yong-Chang Lau , Hwachol Lee , Kohji Nakamura , Masamitsu Hayashi

Ferromagnetic (FM)/heavy metal (HM) nanostructures can be used for the magnetic state readout in the proposed magneto-electric spin-orbit logic by locally injecting a spin-polarized current and measure the spin-to-charge conversion via the…

介观与纳米尺度物理 · 物理学 2021-04-14 Inge Groen , Van Tuong Pham , Naëmi Leo , Alain Marty , Luis E. Hueso , Fèlix Casanova

The influence of hydrogen gas absorption by the Pd layer of bi-layered films containing Pd and Co layers on the inverse Spin Hall Effect (iSHE) in the material is measured. iSHE is driven by ferromagnetic resonance in the cobalt layer. In…

材料科学 · 物理学 2017-06-07 S. Watt , R. Cong , C. Lueng , M. Sushruth , P. J. Metaxas , M. Kostylev

An intriguing feature of spintronics is the use of pure spin-currents to manipulate magnetization, e.g., spin-currents can switch magnetization in spin-torque MRAM, a next-generation DRAM alternative. Giant spin-currents via the spin Hall…

介观与纳米尺度物理 · 物理学 2014-10-15 Mathias Weiler , Justin M. Shaw , Hans T. Nembach , Thomas J. Silva

We study theoretically the effective spin Hall properties of a composite consisting of two materials with and without spin-orbit (SO) coupling. In particular, we assume that SO material represents a system of grains in a matrix with no SO.…

介观与纳米尺度物理 · 物理学 2016-02-17 Z. Yue , M. C. Prestgard , A. Tiwari , M. E. Raikh

We report that due to the orbital Hall effect, orbital pumping effects can occur in materials with weak spin-orbit coupling. Moreover, there is a positive correlation between the strength of the orbital Hall effect and the size of…

应用物理 · 物理学 2025-11-20 Yuejie Zhang , Jinjun Ding , Tao Liu , Xiaofei Yang , Taoyuan Ouyang , Shi Chen , Yongqing Peng

The paper concerns experimental verification of the magnitude of imaginary part of spin mixing conductance in bilayers comprising heavy metals. We present results of broadband ferromagnetic resonance studies on heterostructures consisting…

介观与纳米尺度物理 · 物理学 2020-05-13 Adam Krysztofik , Piotr Graczyk , Hubert Głowiński , Emerson Coy , Karol Załęski , Iwona Gościańska , Janusz Dubowik

3-D topological insulators (TI) with large spin Hall conductivity have emerged as potential candidates for spintronic applications. Here, we report spin to charge conversion in bilayers of amorphous ferromagnet (FM) Fe_{78}Ga_{13}B_{9}…