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相关论文: Observation of strong bulk damping-like spin-orbit…

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Recent discovery of spin-orbit torques (SOTs) within magnetic single-layers has attracted attention in the field of spintronics. However, it has remained elusive as to how to understand and how to tune the SOTs. Here, utilizing the single…

介观与纳米尺度物理 · 物理学 2021-06-28 Lijun Zhu , Daniel C. Ralph , Robert A. Buhrman

Efficient manipulation of antiferromagnetically coupled materials that are integration-friendly and have strong perpendicular magnetic anisotropy (PMA) is of great interest for low-power, fast, dense magnetic storage and computing. Here, we…

材料科学 · 物理学 2024-06-19 Qianbiao Liu , Lijun Zhu , Xiyue S. Zhang , David A. Muller , Daniel C. Ralph

Spin-orbit torque in heavy metal/ferromagnet heterostructures with broken spatial inversion symmetry provides an efficient mechanism for manipulating magnetization using a charge current. Here, we report the presence of a spin torque in a…

介观与纳米尺度物理 · 物理学 2019-05-29 Ziyan Luo , Qi Zhang , Yanjun Xu , Yumeng Yang , Xinhai Zhang , Yihong Wu

Realization of efficient spin-orbit torque switching of the N\'eel vector in insulating antiferromagnets is a challenge, often complicated by spurious effects. Quantifying the spin-orbit torques in antiferromagnet/heavy metal…

We investigate the origin of spin-orbit torques (SOTs) in archetypical Pt/Co/MgO thin films structures by performing harmonic Hall measurements. The behaviour of the damping like (DL) effective field ($h_{DL}$) with varying the Pt layer…

材料科学 · 物理学 2024-03-12 M. S. Gabor , M. Belmeguenai , I. M. Miron

Spin-orbit torque can drive electrical switching of magnetic layers. Here, we report that at least for micrometer-sized samples there is no simple correlation between the efficiency of dampinglike spin-orbit torque ({\xi}_DL^j) and the…

材料科学 · 物理学 2021-03-03 Lijun Zhu , D. C. Ralph , R. A. Buhrman

A damping-like spin orbit torque (SOT) is a prerequisite for ultralow power spin logic devices. Here, we report on the damping-like SOT in just one monolayer of the conducting transition metal dichalcogenide (TMD) TaS$_2$ interfaced with a…

In order to enhance the magnitude of spin-orbit torque (SOT), considerable experimental works have been devoted to studying the thickness dependence of the different layers in multilayers consisting of heavy metal (HM), ferromagnet (FM) and…

应用物理 · 物理学 2018-05-09 Chi Sun , Zhuo Bin Siu , Seng Ghee Tan , Hyunsoo Yang , Mansoor B. A. Jalil

Spintronics is showing promising results in the search for new materials and effects to reduce energy consumption in information technology. Among these materials, ferrimagnets are of special interest, since they can produce large spin…

Topological quantum materials can exhibit unconventional surface states and anomalous transport properties. Still, their applications in spintronic devices are restricted as they require the growth of high-quality thin films with bulk-like…

We report spin-orbit torques (SOT) in L10-ordered perpendicularly magnetized FePt single layer, which is significantly influenced by disorder. Recently, self-induced SOT in L10-FePt single layer has been investigated, which is ascribed to…

材料科学 · 物理学 2021-02-03 S. Q. Zheng , K. K. Meng , Q. B. Liu , J. Miao , X. G. Xu , Y. Jiang

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

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 investigated spin-orbit torques in prototypical Pt-based spintronic devices. We found that, in Pt/Ni and Pt/Fe bilayers, the damping-like torque efficiency depends on the thickness of the Pt layer. We also found that the damping-like…

材料科学 · 物理学 2021-01-20 Hiroki Hayashi , Akira Musha , Hiroto Sakimura , Kazuya Ando

The symmetry of a material fundamentally governs its spin transport properties. While unconventional spin transport phenomena have been predominantly explored in low-symmetry systems (e.g., $C_{1v}$ symmetry), high-symmetry crystals--which…

Using first-principles electronic structure calculation, we demonstrate the spin dissipation process in bulk Fe by orbital excitations within the energy bands of pure spin character. The variation of orbitals in the intraband transitions…

介观与纳米尺度物理 · 物理学 2025-04-02 Yue Chen , Haoran Chen , Xi Shen , Weizhao Chen , Yi Liu , Yizheng Wu , Zhe Yuan

The magnetization manipulation by spin-orbit torques (SOTs) in nonmagnetic-metal (NM)/ferromagnet (FM) heterostructures has provided great opportunities for spin devices. Besides the conventional spin Hall effect (SHE) in heavy metals with…

应用物理 · 物理学 2023-12-11 Zishuang Li , Wenqiang Wang , Kaiyuan Zhou , Xiang Zhan , Tiejun Zhou , Ronghua Liu

Increasing dampinglike spin-orbit torque (SOT) is both of fundamental importance for enabling new research into spintronics phenomena and also technologically urgent for advancing low-power spin-torque memory, logic, and oscillator devices.…

介观与纳米尺度物理 · 物理学 2019-06-12 Lijun Zhu , Lujun Zhu , Shengjie Shi , Manling Sui , D. C. Ralph , R. A. Buhrman

We evaluate the spin density oscillations arising in quantum spin Hall quantum dots created via two localized magnetic barriers. The combined presence of magnetic barriers and spin-momentum locking, the hallmark of topological insulators,…

介观与纳米尺度物理 · 物理学 2013-06-24 Giacomo Dolcetto , Niccolò Traverso Ziani , Matteo Biggio , Fabio Cavaliere , Maura Sassetti

Antiferromagnets and compensated ferrimagnets offer opportunities to investigate spin dynamics in the 'terahertz gap' because their resonance modes lie in the 0.3 THz to 3 THz range. Despite some inherent advantages when compared to…

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