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We investigate magnetization dynamics in a spin-Hall oscillator using a direct current measurement as well as conventional microwave spectrum analysis. When the current applies an anti-damping spin-transfer torque, we observe a change in…

介观与纳米尺度物理 · 物理学 2016-05-25 S. Langenfeld , V. Tshitoyan , Z. Fang , A. Wells , T. A. Moore , A. J. Ferguson

We predict that in a narrow gap III-V semiconductor quantum well or a wire an observable spin current can be generated with a time dependent gate to modify the Rashba spin-orbit coupling constant. Methods to rectify the so generated AC…

介观与纳米尺度物理 · 物理学 2007-05-23 A. G. Mal'shukov , C. S. Tang , C. S. Chu , K. A. Chao

Electromechanical models are crucial in the design and control of motors and actuators. Modeling, identification, drive, and current control loop of a limited-rotation actuator with magnetic restoration is presented. New nonlinear and…

系统与控制 · 电气工程与系统科学 2024-04-12 Sajjad Mohammadi , William R. Benner , James L. Kirtley , Jeffrey H. Lang

Spin-orbit torque provides an efficient pathway to manipulate the magnetic state and magnetization dynamics of magnetic materials, which is crucial for energy-efficient operation of a variety of spintronic devices such as magnetic memory,…

介观与纳米尺度物理 · 物理学 2021-02-24 Hang Xie , Xin Chen , Ziyan Luo , Yihong Wu

The electrical response of two diffusive metals is studied when they are linked by a magnetic insulator hosting a topologically stable (superfluid) spin current. We discuss how charge currents in the metals induce a spin supercurrent state,…

介观与纳米尺度物理 · 物理学 2015-10-14 So Takei , Yaroslav Tserkovnyak

Permanent electric dipole moments (EDMs) violate parity and time reversal symmetry. Within the Standard Model (SM) they are many orders of magnitude below present experimental sensitivity. Many extensions of the SM predict much larger EDMs,…

高能物理 - 实验 · 物理学 2012-04-12 Gerco Onderwater

Colossal magnetoresistance (CMR) is highly applicable in spintronic devices such as magnetic sensors, magnetic memory, and hard drives. Typically, CMR is found in Weyl semimetals characterized by perfect electron-hole symmetry or…

介观与纳米尺度物理 · 物理学 2023-11-28 Yiwen Zhang , Bo Xie , Yue Yang , Yueshen Wu , Xin Lu , Yuxiong Hu , Yifan Ding , Jiadian He , Peng Dong , Jinghui Wang , Xiang Zhou , Jianpeng Liu , Zhu-Jun Wang , Jun Li

Current-induced magnetization excitation is a core phenomenon for next-generation magnetic nanodevices, and has been attributed to the spin-transfer torque (STT) that originates from the transfer of the spin angular momentum between a…

材料科学 · 物理学 2016-03-30 K. J. Kim , T. Moriyama , T. Koyama , D. Chiba , S. W. Lee , S. J. Lee , K. J. Lee , H. W. Lee , T. Ono

The Compact Muon Solenoid (CMS) detector at the Large Hadron Collider at CERN is used to study the production of new particles in proton-proton collisions at a center of mass energy of 13.6 TeV. The detector includes a magnet based on a 6 m…

仪器与探测器 · 物理学 2025-01-20 Vyacheslav Klyukhin , Benoit Curé , Andrea Gaddi , Antoine Kehrli , Maciej Ostrega , Xavier Pons

The recent development of all-electrical electron spin resonance (ESR) in a scanning tunneling microscope (STM) setup has opened the door to vast applications. Despite the fast growing number of experimental works on STM-ESR, the…

介观与纳米尺度物理 · 物理学 2019-07-17 J. Reina Gálvez , C. Wolf , F. Delgado , N. Lorente

The calculations presented here reveal that an electron probe carrying orbital angular momentum is just a particular case of a wider class of electron beams that can be used to measure electron magnetic circular dichroism (EMCD) with atomic…

材料科学 · 物理学 2015-06-22 Jan Rusz , Juan-Carlos Idrobo , Somnath Bhowmick

The in-circuit common-mode (CM) impedance at the AC input of a motor drive system (MDS) provides valuable inputs for evaluating and estimating the CM electromagnetic interference (EMI) noise generated by the switching of power semiconductor…

系统与控制 · 电气工程与系统科学 2021-10-20 Zhenyu Zhao , Fei Fan , Arjuna Weerasinghe , Pengfei Tu , Kye Yak See

SrMnO$_{3}$ (SMO) is a magnetic insulator and predicted to exhibit a multiferroic phase upon straining. Strained films of SMO display a wide range of magnetic orders, ranging from G-type to C-and A-type, indicative of competing magnetic…

材料科学 · 物理学 2023-09-13 J. J. L. van Rijn , T. Banerjee

Electrically detected magnetic resonance (EDMR) and near-zero field magnetoresistance (NZFMR) are techniques that probe defect states at dielectric interfaces critical for metal-oxide-semiconductor (MOS) electronic devices such as the…

材料科学 · 物理学 2023-12-27 Nicholas J. Harmon , James P. Ashton , Patrick M. Lenahan , Michael E. Flatté

Central to spintronics is the interconversion between electronic charge and spin currents, and this can arise from the chirality-induced spin selectivity (CISS) effect. CISS is often studied as magnetoresistance (MR) in two-terminal (2T)…

介观与纳米尺度物理 · 物理学 2020-08-21 Xu Yang , Caspar H. van der Wal , Bart J. van Wees

The local magnetic field in a Penning-Malmberg trap is found by measuring the temperatures that result when electron plasmas are illuminated by microwaves pulses. Multiple heating resonances are observed as the pulse frequencies are swept.…

等离子体物理 · 物理学 2020-03-18 E. D. Hunter , A. Christensen , J. Fajans , T. Friesen , E. Kur , J. S. Wurtele

Magnetic skyrmions are topologically protected whirling spin textures that can be stabilized in magnetic materials in which a chiral interaction is present. Their limited size together with their robustness against the external…

介观与纳米尺度物理 · 物理学 2018-05-09 Davide Maccariello , William Legrand , Nicolas Reyren , Karin Garcia , Karim Bouzehouane , Sophie Collin , Vincent Cros , Albert Fert

This Letter is a micromagnetic simulation-based study on the GHz-frequency ferromagnetic resonances for the detection of magnetic nanoparticles (MNPs) using spin current nano-oscillator (SCNO) operating in precession mode as a spintronic…

应用物理 · 物理学 2019-10-01 Renata Saha , Kai Wu , Diqing Su , Jian-Ping Wang

This paper evaluates the seismic fragility of a two-span reinforced concrete (RC) bridge with shape memory alloy (SMA)-restrained rocking (SRR) columns through machine learning (ML) techniques. SRR columns incorporate a combination of…

地球物理 · 物理学 2023-03-02 Miles Akbarnezhad , Mohammad Salehi , Reginald DesRoches

We theoretically examine the spin-transfer torque in the presence of spin-orbit interaction (SOI) at impurities in a ferromagnetic metal on the basis of linear response theory. We obtained, in addition to the usual spin-transfer torque, a…

介观与纳米尺度物理 · 物理学 2015-05-13 Junya Shibata , Hiroshi Kohno