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An accurate method is developed to extract the spin-orbit effective fields through analysis of the results of harmonic Hall voltage measurements by deriving detailed analytical equations, in which both the z-component of the applied…

Materials Science · Physics 2017-12-05 Seok Jin Yun , Eun-Sang Park , Kyung-Jin Lee , Sang Ho Lim

Solid understanding of current induced torques is key to the development of current and voltage controlled magnetization dynamics in ultrathin magnetic heterostructures. To evaluate the size and direction of such torques, or effective…

Mesoscale and Nanoscale Physics · Physics 2015-06-17 Masamitsu Hayashi , Junyeon Kim , Michihiko Yamanouchi , Hideo Ohno

Solid understanding of current induced torques is key to the development of current and voltage controlled magnetization dynamics in ultrathin magnetic heterostructures. A versatile technique is needed to evaluate such torques in various…

Mesoscale and Nanoscale Physics · Physics 2013-07-23 Masamitsu Hayashi

The spin torque ferromagnetic resonance (STFMR) is one of the popular methods for measurement of the spin Hall angle (SHA). However, in order to accurately determine SHA from STFMR measurements, the acquired data must be carefully analyzed:…

Strongly Correlated Electrons · Physics 2021-08-25 Ranen Ben-Shalom , Nirel Bernstein , See-Hun Yang , Amir Capua

Materials with significant spin-orbit coupling enable efficient spin-to-charge interconversion, which can be utilized in novel spin electronic devices. A number of elements, mainly heavy-metals (HM) have been identified to produce a sizable…

We present cmtj - a comprehensive simulation package that allows large-scale macrospin simulations for a variety of multilayer spintronics devices. Apart from conventional static simulations, such as magnetoresistance and magnetisation…

Harmonic Hall voltage measurements are a wide-spread quantitative technique for the measurement of spin-orbit induced effective fields in heavy-metal / ferromagnet heterostructures. In the vicinity of the voltage pickup lines in the Hall…

Mesoscale and Nanoscale Physics · Physics 2018-04-23 Lukas Neumann , Markus Meinert

Harmonic analysis is a powerful tool to characterize and quantify current-induced torques acting on magnetic materials, but so far it remains an open question in studying antiferromagnets. Here we formulate a general theory of harmonic Hall…

Mesoscale and Nanoscale Physics · Physics 2022-05-09 Hantao Zhang , Ran Cheng

The electrical detection of spin torque ferromagnetic resonance (st-FMR) is becoming a popular method for measuring the spin-Hall angle of heavy metals (HM). However, various sensible analysis on the same material with either the same or…

Mesoscale and Nanoscale Physics · Physics 2019-02-27 Yin Zhang , Q. Liu , B. F. Miao , H. F. Ding , X. R. Wang

Electrical switching of antiferromagnets is an exciting recent development in spintronics, which promises active antiferromagnetic devices with high speed and low energy cost. In this emerging field, there is an active debate about the…

Mesoscale and Nanoscale Physics · Physics 2022-07-13 Yang Cheng , Egecan Cogulu , Rachel D. Resnick , Justin J. Michel , Nahuel N. Statuto , Andrew D. Kent , Fengyuan Yang

A concept of an electrically tunable resonance detector of THz-frequency signals based on antiferromagnetic/heavy metal (AFM/HM) hetero-structure is proposed. The conversion of a THz-frequency input signal into DC voltage is done using the…

Strongly Correlated Electrons · Physics 2020-12-17 A. Safin , V. Puliafito , M. Carpentieri , G. Finocchio , S. Nikitov , P. Stremoukhov , A. Kirilyuk , V. Tyberkevych , A. Slavin

The Hall response function of symmetric and asymmetric planar Hall effect devices is investigated by scanning a magnetized tip above a sensor surface while simultaneously recording the topography and the Hall voltage. Hall sensor geometries…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 H. Guillou , A. D. Kent , G. W. Stupian , M. S. Leung

The understanding of spin dynamics in laterally confined structures on sub-micron length scales has become a significant aspect of the development of novel magnetic storage technologies. Numerous ferromagnetic resonance measurements,…

Mesoscale and Nanoscale Physics · Physics 2016-02-12 Matthias B. Jungfleisch , Wei Zhang , Junjia Ding , Wanjun Jiang , Joseph Sklenar , John E. Pearson , John B. Ketterson , Axel Hoffmann

We study the temperature dependence of spin Hall magnetoresistance (SMR) in antiferromagnetic insulator (AFI)/metal bilayer systems. We calculate the amplitude of the SMR signal by using a quantum Monte Carlo simulation and examine how the…

Mesoscale and Nanoscale Physics · Physics 2023-03-08 Takuto Ishikawa , Mamoru Matsuo , Takeo Kato

Harmonic Hall measurements were performed on a series of ferromagnetic metal/heavy metal (FM/HM) bilayers consisting of Permalloy (Py) as the FM and beta-Tungsten (W) as the HM, and the efficiencies of the two orthogonal components of the…

Mesoscale and Nanoscale Physics · Physics 2026-03-03 Abu Bakkar Miah , Dhananjaya Mahapatra , Soumik Aon , Harekrishna Bhunia , Partha Mitra

The development of advanced spintronics devices hinges on the efficient generation and utilization of pure spin current. In materials with large spin-orbit coupling, the spin Hall effect may convert charge current to pure spin current and a…

Materials Science · Physics 2017-08-16 Sucheta Mondal , Samiran Choudhury , Neha Jha , Arnab Ganguly , Jaivardhan Sinha , Anjan Barman

Topologically protected spin textures, such as magnetic skyrmions, have the potential for dense data storage as well as energy-efficient computing due to their small size and a low driving current. The evaluation of the writing and reading…

Materials Science · Physics 2023-04-18 Aijaz H. Lone , Xuecui Zou , Debasis Das , Xuanyao Fong , Gianluca Setti , Hossein Fariborzi

The efficiencies of the spin-orbit torques (SOTs) play a key role in the determination of the power consumption, integration density, and endurance of SOT-driven devices. Accurate and time-efficient determination of the SOT efficiencies is…

Mesoscale and Nanoscale Physics · Physics 2024-08-28 Xin Lin , Lijun Zhu

An oscillographic study of the Hall voltage with an unpolarized alternating current through a platinum sample revealed choral features of the Hall effect, which clearly demonstrate the presence of the spin Hall effect in metals with a…

Mesoscale and Nanoscale Physics · Physics 2021-01-27 Yu. N. Chiang , M. O. Dzyuba

Spin-torque ferromagnetic resonance (ST-FMR) is a common method used to measure spin-orbit torques (SOTs) in heavy metal/ferromagnet bilayer structures. In the course of a measurement, other resonant processes such as spin pumping (SP) and…

Mesoscale and Nanoscale Physics · Physics 2020-08-19 Saba Karimeddiny , Joseph A. Mittelstaedt , Robert A. Buhrman , Daniel C. Ralph
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