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Two classes of spin-orbit coupling (SOC) mechanisms have been considered as candidate sources for the spin orbit torque (SOT): the spin Hall Effect (SHE) in heavy metals with strong SOC and the Rashba effect arising from broken inversion…

材料科学 · 物理学 2018-01-24 Zelalem Abebe Bekele , Kangkang Meng , Yong Wu , Jun Miao , Xiaoguang Xu , Yong Jiang

Quantum oxide materials possess a vast range of properties stemming from the interplay between the lattice, charge, spin and orbital degrees of freedom, in which electron correlations often play an important role. Historically, the…

材料科学 · 物理学 2021-12-10 Felix Trier , Paul Noël , Joo-Von Kim , Jean-Philippe Attané , Laurent Vila , Manuel Bibes

Electrical switching and readout of antiferromagnets allows to exploit the unique properties of antiferromagnetic materials in nanoscopic electronic devices. Here we report experiments on the spin-orbit torque induced electrical switching…

材料科学 · 物理学 2020-03-25 Mareike Dunz , Tristan Matalla-Wagner , Markus Meinert

Spin-orbit coupling (SOC), the interaction between the electron spin and the orbital angular momentum, can unlock rich phenomena at interfaces, in particular interconverting spin and charge currents. Conventional heavy metals have been…

Current-induced domain wall (DW) motion has drawn great attention in the last decades as the key operational principle of emerging magnetic memory devices. As the major driving force of the current-induced DW motion, the spin-orbit torque…

材料科学 · 物理学 2017-04-26 Soong-Geun Je , Sang-Cheol Yoo , Joo-Sung Kim , Joon Moon , Byoung-Chul Min , Sug-Bong Choe

We demonstrate that spin-orbit coupled electrons in a magnetically doped system exert a spin torque on the local magnetization, without a flowing current, when the chemical potential is modulated in a magnetic field. The spin torque is…

介观与纳米尺度物理 · 物理学 2015-09-17 Kentaro Nomura , Daichi Kurebayashi

We theoretically investigate current-induced magnetization dynamics in chiral-lattice helimagnets. Spin-orbit coupling in non-centrosymmetric crystals induces a reactive spin-transfer torque that has not been previously considered. We…

介观与纳米尺度物理 · 物理学 2013-05-09 Kjetil M. D. Hals , Arne Brataas

Magneto-ionics, by which the magnetic properties of a thin layer can be modified through the migration of ions within a liquid or solid electrolyte, is a fast developing research field. This is mainly due to the perspective of energy…

材料科学 · 物理学 2021-08-26 A. Fassatoui , L. Ranno , J. Peña Garcia , C. Balan , J. Vogel , H. Béa , S. Pizzini

Transition metal dichalcogenides (TMDs) are promising materials for efficient generation of current-induced spin-orbit torques on an adjacent ferromagnetic layer. Numerous effects, both interfacial and bulk, have been put forward to explain…

The main obstacles in realizing diluted magnetic oxide (DMO) in spintronics are the unknown electronic structures associated with its high TC ferromagnetism and spin polarized current and how to manipulate desired electronic structures by…

Considering an array of spin torque transfer nano oscillators (STNOs), we have investigated the synchronization property of the system under the action of a common periodically driven applied external magnetic field by numerically analyzing…

混沌动力学 · 物理学 2014-06-17 B. Subash , V. K. Chandrasekar , M. Lakshmanan

We perform a comparative study of spin transfer induced excitation of the gyrotropic motion of a vortex core with either uniform or vortex spin polarizers. The microwave output voltage associated with the vortex dynamics, detected in both…

A key aim in spintronics is to achieve current-induced magnetization switching via spin-orbit torques without external magnetic fields. For this, the focus of recent work has been on introducing controlled lateral gradients across…

Spin current and spin torque generation through the spin-orbit interactions in solids, of bulk or interfacial origin, is at the heart of spintronics research. The realization of spin-orbit torque (SOT) driven magnetic dynamics and switching…

介观与纳米尺度物理 · 物理学 2021-03-22 Minh-Hai Nguyen , Chi-Feng Pai

Spintronics exploits spin-orbit coupling (SOC) to generate spin currents, spin torques, and, in the absence of inversion symmetry, Rashba, and Dzyaloshinskii-Moriya interactions (DMI). The widely used magnetic materials, based on 3d metals…

Charge to spin (orbital) momentum conversion phenomena enclose great potential for advancing applications in spin/orbitronics. Although current-induced magnetic moment accumulation is crucial both for fundamental understanding and practical…

材料科学 · 物理学 2025-11-25 Emanuele Longo , Josep Fontcuberta , Paolo Vavassori

In the absence of an applied magnetic field, a spin-torque nano oscillator(STNO) with a tilted polarizer is studied using numerical simulation of the associated Landau-Lifshitz-Gilbert-Slonczewski equation. We find considerable enhancement…

介观与纳米尺度物理 · 物理学 2020-05-20 R. Arun , 1 R. Gopal , V. K. Chandrasekar , M. Lakshmanan

The spin-orbit torque switching of ferrimagnetic Gd$_x$(Fe$_{90}$Co$_{10}$)$_{100-x}$ films was studied for both transition metal (TM)-rich and rare earth (RE)-rich configurations. The spin-orbit torque driven magnetization switching…

介观与纳米尺度物理 · 物理学 2018-06-08 Niklas Roschewsky , Tomoya Matsumura , Suraj Cheema , Frances Hellman , Takeshi Kato , Satoshi Iwata , Sayeef Salahuddin

Charge-spin interconversion processes underpin the generation of spin-orbit torques in magnetic/nonmagnetic bilayers. However, efficient sources of spin currents such as 5d metals are also efficient spin sinks, resulting in a large increase…

材料科学 · 物理学 2024-08-23 Shilei Ding , Hanchen Wang , William Legrand , Paul Noël , Pietro Gambardella

We study the spin-orbit torques (SOTs) in Co/Cu/Co magnetic trilayers based on first-principles density-functional theory calculations in the case where the applied electric field lies in-plane, i.e., parallel to the interfaces. We assume…

介观与纳米尺度物理 · 物理学 2018-07-31 Frank Freimuth , Stefan Blügel , Yuriy Mokrousov