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Title: Spin Hall effect-controlled magnetization dynamics in NiMnSb

Abstract

We investigate the influence of a spin current generated from a platinum layer on the ferromagnetic resonance (FMR) properties of an adjacent ferromagnetic layer composed of the halfmetallic half-Heusler material NiMnSb. Spin Hall nano-oscillator devices are fabricated, and the technique of spin torque FMR is used to locally study the magnetic properties as in-plane anisotropies and resonance fields. A change in the FMR linewidth, in accordance with the additional spin torque produced by the spin Hall effect, is present for an applied dc current. For sufficiently large currents, this should yield auto-oscillations, which however are not achievable in the present device geometry.

Authors:
;  [1]; ; ;  [2];  [1];  [3];  [3]
  1. Department of Physics, University of Gothenburg, 412 96 Gothenburg (Sweden)
  2. Physikalisches Institut (EP3), Universität Würzburg, 97074 Würzburg (Germany)
  3. (Sweden)
Publication Date:
OSTI Identifier:
22410122
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANISOTROPY; ANTIMONY ADDITIONS; DIRECT CURRENT; FERROMAGNETIC MATERIALS; FERROMAGNETIC RESONANCE; FERROMAGNETISM; HALL EFFECT; HEUSLER ALLOYS; LAYERS; LINE WIDTHS; MAGNETIC PROPERTIES; MAGNETIZATION; MANGANESE ALLOYS; NICKEL ALLOYS; OSCILLATIONS; OSCILLATORS; PLATINUM; SPIN

Citation Formats

Dürrenfeld, P., E-mail: philipp.durrenfeld@physics.gu.se, Ranjbar, M., Gerhard, F., Gould, C., Molenkamp, L. W., Åkerman, J., NanOsc AB, 164 40 Kista, and Materials Physics, School of ICT, KTH-Royal Institute of Technology, Electrum 229, 164 40 Kista. Spin Hall effect-controlled magnetization dynamics in NiMnSb. United States: N. p., 2015. Web. doi:10.1063/1.4907240.
Dürrenfeld, P., E-mail: philipp.durrenfeld@physics.gu.se, Ranjbar, M., Gerhard, F., Gould, C., Molenkamp, L. W., Åkerman, J., NanOsc AB, 164 40 Kista, & Materials Physics, School of ICT, KTH-Royal Institute of Technology, Electrum 229, 164 40 Kista. Spin Hall effect-controlled magnetization dynamics in NiMnSb. United States. doi:10.1063/1.4907240.
Dürrenfeld, P., E-mail: philipp.durrenfeld@physics.gu.se, Ranjbar, M., Gerhard, F., Gould, C., Molenkamp, L. W., Åkerman, J., NanOsc AB, 164 40 Kista, and Materials Physics, School of ICT, KTH-Royal Institute of Technology, Electrum 229, 164 40 Kista. Thu . "Spin Hall effect-controlled magnetization dynamics in NiMnSb". United States. doi:10.1063/1.4907240.
@article{osti_22410122,
title = {Spin Hall effect-controlled magnetization dynamics in NiMnSb},
author = {Dürrenfeld, P., E-mail: philipp.durrenfeld@physics.gu.se and Ranjbar, M. and Gerhard, F. and Gould, C. and Molenkamp, L. W. and Åkerman, J. and NanOsc AB, 164 40 Kista and Materials Physics, School of ICT, KTH-Royal Institute of Technology, Electrum 229, 164 40 Kista},
abstractNote = {We investigate the influence of a spin current generated from a platinum layer on the ferromagnetic resonance (FMR) properties of an adjacent ferromagnetic layer composed of the halfmetallic half-Heusler material NiMnSb. Spin Hall nano-oscillator devices are fabricated, and the technique of spin torque FMR is used to locally study the magnetic properties as in-plane anisotropies and resonance fields. A change in the FMR linewidth, in accordance with the additional spin torque produced by the spin Hall effect, is present for an applied dc current. For sufficiently large currents, this should yield auto-oscillations, which however are not achievable in the present device geometry.},
doi = {10.1063/1.4907240},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 117,
place = {United States},
year = {2015},
month = {5}
}