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相关论文: Giant Spin-Orbit Torque in Cr-based Janus Transiti…

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Janus transition metal dichalcogenides (JTMDs) monolayers have emerged as a new paradigm to broaden the family of two-dimensional (2D) materials. Despite numerous theoretical predictions of JTMDs, their experimental realization remains…

We propose to engineer time-reversal-invariant topological insulators in two-dimensional (2D) crystals of transition metal dichalcogenides (TMDCs). We note that, at low doping, semiconducting TMDCs under shear strain will develop…

介观与纳米尺度物理 · 物理学 2014-08-13 M. A. Cazalilla , H. Ochoa , F. Guinea

Antiferromagnets with zero net magnetic moment, strong anti-interference and ultrafast switching speed have potential competitiveness in high-density information storage. Body centered tetragonal antiferromagnet Mn2Au with opposite spin…

材料科学 · 物理学 2018-04-17 X. F. Zhou , J. Zhang , F. Li , X. Z. Chen , G. Y. Shi , Y. Z. Tan , Y. D. Gu , M. S. Saleem , H. Q. Wu , F. Pan , C. Song

Recently, unconventional antiferromagnets that enable the splitting of electronic spins have been theoretically proposed and experimentally realized, where the magnetic sublattices containing moments pointing at different directions are…

We study the spin-orbit torque (SOT) effective fields in Cr/CoFeAl/MgO and Ru/CoFeAl/MgO magnetic heterostructures using the adiabatic harmonic Hall measurement. High-quality perpendicular-magnetic-anisotropy CoFeAl layers were grown on Cr…

材料科学 · 物理学 2016-03-15 Zhenchao Wen , Junyeon Kim , Hiroaki Sukegawa , Masamitsu Hayashi , Seiji Mitani

Using Density functional theory and non-equilibrium Green's function formalism, spin dependent electron transport in Fe/Mo$_x$Cr$_{1-x}$S$_2$/Fe magnetic tunnel junction is studied. Spin transport for different thicknesses (1, 3, 5, and 7…

材料科学 · 物理学 2026-01-06 Aloka Ranjan Sahoo , Sharat Chandra

We suggest coherent switching of canted antiferromagnetic (AFM) spins using spin-orbit torque (SOT) in small magnet. The magnetic system of orthoferrite features biaxial easy anisotropy and the Dzyaloshinskii Moriya interaction, which is…

材料科学 · 物理学 2021-08-18 T. H. Kim , S. Hwang , S. Y. Hamh , S. H. Yoon , S. H. Han , B. K. Cho

We report the observation of the intrinsic damping-like spin-orbit torque (SOT) arising from the Berry curvature in metallic-magnet/CuO$_x$ heterostructures. We show that a robust damping-like SOT, an order of magnitude larger than a…

材料科学 · 物理学 2018-07-11 Tenghua Gao , Alireza Qaiumzadeh , Hongyu An , Akira Musha , Yuito Kageyama , Ji Shi , Kazuya Ando

The spin Hall effect (SHE) is found to be strong in heavy transition metals (HM), such as Ta and W, in their amorphous and/or high resistivity form. In this work, we show that by employing a Cu-Ta binary alloy as buffer layer in an…

材料科学 · 物理学 2017-09-28 Tian-Yue Chen , Chun-Te Wu , Hung-Wei Yen , Chi-Feng Pai

Spin-orbit coupling (SOC) is at the heart of many exotic band-structures and can give rise to many-body states with topological order. Here we present a general scheme based on a combination of microwave driving and lattice shaking for the…

量子气体 · 物理学 2017-06-28 Fabian Grusdt , Tracy Li , Immanuel Bloch , Eugene Demler

We show that the magnetic response of atomically thin materials with Dirac spectrum and spin-orbit interactions can exhibit strong dependence on electron-electron interactions. While graphene itself has a very small spin-orbit coupling,…

介观与纳米尺度物理 · 物理学 2020-07-24 Sanghita Sengupta , Madalina I. Furis , Oleg P. Sushkov , Valeri N. Kotov

Topological swirling spin textures, such as skyrmions and merons, have recently attracted much attention as a unique building block for high-density magnetic information devices. The controlled transformation among different types of such…

Two-dimensional (2D) Janus transition metal dichalcogenides (TMDs) are promising candidates for various applications in non-linear optics, energy harvesting, and catalysis. These materials are usually synthesized via chemical conversion of…

We compute spin-orbit torques (SOTs) in strained PtMnSb from first principles. We consider both tetragonal strain and shear strain. We find a strong linear dependence of the field-like SOTs on these strains, while the antidamping SOT is…

材料科学 · 物理学 2021-06-14 Frank Freimuth , Stefan Blügel , Yuriy Mokrousov

Spin-orbit torque (SOT) magnetoresistance (MR) devices have attracted attention for use in next-generation MR devices. The SOT devices are known to exhibit different write properties based on the relative angle between the magnetization…

介观与纳米尺度物理 · 物理学 2021-01-11 Yohei Shiokawa , Eiji Komura , Yugo Ishitani , Atsushi Tsumita , Keita Suda , Kosuke Hamanaka , Tomohiro Taniguchi , Tomoyuki Sasaki

Inspired by recent experimental synthesis of the two-dimensional Janus material MoSH, we have performed extensive first-principles calculations to investigate the characteristics of all possible Janus two-dimensional transition metal…

材料科学 · 物理学 2024-05-22 Dawei Zhou , Dominik Szczęśniak , Pan Zhanga , Zhuo Wang , Chunying Pu

Spin-orbit torque (SOT) created by a spin current injected into a ferromagnet by an adjacent heavy metal represents an efficient tool for the excitation and manipulation of spin waves. Here we report the micromagnetic simulations describing…

介观与纳米尺度物理 · 物理学 2023-10-20 Andrei I. Nikitchenko , Nikolay A. Pertsev

We study the electronic response of Janus transition metal dihalide (TMH) nanotubes to mechanical deformations using Kohn-Sham density functional theory. Specifically, considering twelve armchair and zigzag Janus TMH nanotubes that are…

材料科学 · 物理学 2023-04-05 Arpit Bhardwaj , Phanish Suryanarayana

We demonstrate the formation of orbital and spin Hall effects (OHE/SHE) in the 1T phase of non-magnetic transition metal dichalcogenides. With the aid of density functional theory calculations and model Hamiltonian studies on MX$_2$ (M =…

介观与纳米尺度物理 · 物理学 2024-05-21 Pratik Sahu , Jatin Kumar Bidika , Bubunu Biswal , S. Satpathy , B. R. K. Nanda

2D Janus TMDC layers with broken mirror symmetry exhibit giant Rashba splitting and unique excitonic behavior. For their 1D counterparts, the Janus nanotubes possess curvature, which introduce an additional degree of freedom to break the…

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