Characterization of spin-transfer-torque effect induced magnetization dynamics driven by short current pulses

T. Meyer, T. Brächer, F. Heussner, A. A. Serga, H. Naganuma, K. Mukaiyama, M. Oogane, Y. Ando, B. Hillebrands, P. Pirro

研究成果: Article

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We present a time-resolved study of the magnetization dynamics in a microstructured Cr|Heusler|Pt waveguide driven by the spin-Hall-effect and the spin-transfer-torque effect via short current pulses. In particular, we focus on the determination of the threshold current at which the spin-wave damping is compensated. We have developed an alternative method based on the temporal evolution of the magnon density at the beginning of an applied current pulse at which the magnon density deviates from the thermal level. Since this method does not depend on the signal-to-noise ratio, it allows for a robust and reliable determination of the threshold current which is important for the characterization of any future application based on the spin-transfer-torque effect.

元の言語English
記事番号022401
ジャーナルApplied Physics Letters
112
発行部数2
DOI
出版物ステータスPublished - 2018 1 8

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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