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Flexible ferromagnetic rings are spin-chain magnets, in which the magnetic and mechanical subsystems are coupled. The coupling is achieved through the tangentially oriented anisotropy axis. The possibility to operate the mechanics of the…

介观与纳米尺度物理 · 物理学 2019-01-09 Yuri Gaididei , Kostiantyn V. Yershov , Denis D. Sheka , Volodymyr P. Kravchuk , Avadh Saxena

In this review, we present recent theoretical developments on spin transport phenomena probed by ferromagnetic resonance (FMR) modulation in two-dimensional systems coupled to magnetic materials. We first address FMR linewidth enhancements…

介观与纳米尺度物理 · 物理学 2025-10-28 Yuya Ominato , Masaki Yama , Ai Yamakage , Mamoru Matsuo , Takeo Kato

Using the nascent concept of quantum spin-transfer torque [A. Zholud et al., Phys. Rev. Lett. {\bf 119}, 257201 (2017); M. D. Petrovi\'{c} {\em et al.}, Phys. Rev. X {\bf 11}, 021062 (2021)], we demonstrate that a current pulse can be…

Antiferromagnets naturally exhibit three obvious advantages over ferromagnets for memory device applications: insensitivity to external magnetic fields, much faster spin dynamics (~THz) and higher packing density due to the absence of any…

介观与纳米尺度物理 · 物理学 2019-03-15 Zhiqi Liu , Zexin Feng , Han Yan , Xiaoning Wang , Xiaorong Zhou , Peixin Qin , Huixin Guo , Ronghai Yu , Chengbao Jiang

Altermagnets recently came into the spotlight as a new class of magnetic materials, arising as a consequence of specific crystal symmetries. They are characterized by a spin-polarized electronic band structure similar to ferromagnets, but…

We proposed a novel and simple multilayer structure to realize the deterministic switching of perpendicularly magnetized layers (Co in our work) by spin orbital torque from the spin Hall Effect in this paper. A pinned layer is introduced,…

计算物理 · 物理学 2017-05-08 Sumei Wang

Ferromagnetic films with perpendicular magnetic anisotropy are of interest in spintronics and superconducting spintronics. Perpendicular magnetic anisotropy can be achieved in thin ferromagnetic multilayer structures, when the anisotropy is…

介观与纳米尺度物理 · 物理学 2023-06-01 N. Satchell , S. Gupta , M. Maheshwari , P. M. Shepley , M. Rogers , O. Cespedes , G. Burnell

In synthetic antiferromagnets (SAFs) the combination of antiferromagnetic order and synthesis using conventional sputtering techniques is combined to produce systems that are advantageous for spintronics applications. Here we present the…

Spin-orbit torques offer a promising mechanism for electrically controlling magnetization dynamics in nanoscale heterostructures. While spin-orbit torques occur predominately at interfaces, the physical mechanisms underlying these torques…

介观与纳米尺度物理 · 物理学 2020-12-02 Vivek P. Amin , Paul M. Haney , Mark D. Stiles

A magnetic skyrmion isusually refers to a twisted spin texture surrounded by uniformly aligned out-of-plane spinsin the background of a uniformly magnetized state. The invariance of the magnetic skyrmion conserves its topological charge…

介观与纳米尺度物理 · 物理学 2020-01-01 Kyoung-Woong Moon , Jungbum Yoon , Changsoo Kim , Chanyong Hwang

The lack of certain crystalline symmetries in strong spin-orbit-coupled non-magnetic materials allows for the existence of uncoventional spin Hall responses, with electrically generated transverse spin currents possessing collinear flow and…

介观与纳米尺度物理 · 物理学 2022-11-01 D. J. P. de Sousa , P. M. Haney , J. P. Wang , Tony Low

Magnetic bilayers with different magnetic anisotropy directions are interesting for spintronic appli- cations as they offer the possibility to engineer tilted remnant magnetization states. We investigate the ferromagnetic resonance (FMR)…

介观与纳米尺度物理 · 物理学 2018-12-05 Jun-Wen Xu , Volker Sluka , Bartek Kardasz , Mustafa Pinarbasi , Andrew D. Kent

Deterministically controllable multi-state polarizations in ferroelectric materials are promising for the application of next-generation non-volatile multi-state memory devices. However, the achievement of multi-state polarizations has been…

材料科学 · 物理学 2025-02-19 Chao Chen , Deyang Chen , Peilian Li , Minghui Qin , Xubing Lu , Guofu Zhou , Xingsen Gao , Jun-Ming Liu

It is experimentally shown that the critical current for onset of spin-torque instability in current-perpendicular-to-plane spin-valves can be strongly enhanced using "synthetic ferrimagnet" free-layers of form FM1/Ru/FM2 (FM=ferrromagnet).…

其他凝聚态物理 · 物理学 2009-11-13 Neil Smith , Stefan Maat , Matthew J. Carey , Jeffrey R. Childress

We propose a novel ferroelectric switchable altermagnetism effect, the reversal of ferroelectric polarization is coupled to the switching of altermagnetic spin splitting. We demonstrate the design principles for the ferroelectric…

Several new features arise in the ground-state phase diagram of a spin-1 condensate trapped in an optical trap when the magnetic dipole interaction between the atoms is taken into account along with confinement and spin precession. The…

量子气体 · 物理学 2010-02-06 Jonas A. Kjäll , Andrew M. Essin , Joel E. Moore

Engineering magnetic anisotropy in a ferro- or ferrimagnetic (FM) thin film is crucial in spintronic device. One way to modify the magnetic anisotropy is through the surface of the FM thin film. Here, we report the emergence of a…

Multistable mechanical metamaterials enable programmable transitions between discrete stable states through propagating kink transition waves (TWs). Yet controlling these kinks typically requires local actuation or high-energy deformation,…

应用物理 · 物理学 2026-03-04 Samuele Ferracin , Dengge Jin , Vincent Tournat , Jordan R. Raney

Achieving brain-like density and performance in neuromorphic computers necessitates scaling down the size of nanodevices emulating neuro-synaptic functionalities. However, scaling nanodevices results in reduction of programming resolution…

新兴技术 · 计算机科学 2023-03-14 A N M Nafiul Islam , Arnob Saha , Zhouhang Jiang , Kai Ni , Abhronil Sengupta

In computational neuroscience, as well as in machine learning, neuromorphic devices promise an accelerated and scalable alternative to neural network simulations. Their neural connectivity and synaptic capacity depends on their specific…