Coherent Transfer of Spin Angular Momentum by Evanescent Spin Waves within Antiferromagnetic NiO

MacIej Dąbrowski, Takafumi Nakano, David M. Burn, Andreas Frisk, David G. Newman, Christoph Klewe, Qian Li, Mengmeng Yang, Padraic Shafer, Elke Arenholz, Thorsten Hesjedal, Gerrit Van Der Laan, Zi Q. Qiu, Robert J. Hicken

研究成果: Article

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抜粋

Insulating antiferromagnets have recently emerged as efficient and robust conductors of spin current. Element-specific and phase-resolved X-ray ferromagnetic resonance has been used to probe the injection and transmission of ac spin current through thin epitaxial NiO(001) layers. The spin current is found to be mediated by coherent evanescent spin waves of GHz frequency, rather than propagating magnons of THz frequency, paving the way towards coherent control of the phase and amplitude of spin currents within an antiferromagnetic insulator at room temperature.

元の言語English
記事番号217201
ジャーナルPhysical review letters
124
発行部数21
DOI
出版物ステータスPublished - 2020 5 29

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Dąbrowski, M., Nakano, T., Burn, D. M., Frisk, A., Newman, D. G., Klewe, C., Li, Q., Yang, M., Shafer, P., Arenholz, E., Hesjedal, T., Van Der Laan, G., Qiu, Z. Q., & Hicken, R. J. (2020). Coherent Transfer of Spin Angular Momentum by Evanescent Spin Waves within Antiferromagnetic NiO. Physical review letters, 124(21), [217201]. https://doi.org/10.1103/PhysRevLett.124.217201