Excitation of coherent propagating spin waves by pure spin currents

Nature Communications
Vladislav E DemidovSergej O Demokritov

Abstract

Utilization of pure spin currents not accompanied by the flow of electrical charge provides unprecedented opportunities for the emerging technologies based on the electron's spin degree of freedom, such as spintronics and magnonics. It was recently shown that pure spin currents can be used to excite coherent magnetization dynamics in magnetic nanostructures. However, because of the intrinsic nonlinear self-localization effects, magnetic auto-oscillations in the demonstrated devices were spatially confined, preventing their applications as sources of propagating spin waves in magnonic circuits using these waves as signal carriers. Here, we experimentally demonstrate efficient excitation and directional propagation of coherent spin waves generated by pure spin current. We show that this can be achieved by using the nonlocal spin injection mechanism, which enables flexible design of magnetic nanosystems and allows one to efficiently control their dynamic characteristics.

References

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Citations

Jan 6, 2017·Nanoscale·Philipp DürrenfeldJohan Åkerman
Jan 30, 2018·Science Advances·Qi WangAndrii V Chumak
May 12, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Soichiro OkiKohei Hamaya
Jul 3, 2018·Advanced Materials·Boris DivinskiySergej O Demokritov
Jan 21, 2018·Scientific Reports·M EveltS O Demokritov
Jan 17, 2020·Advanced Materials·Edoardo AlbisettiDaniela Petti
Apr 15, 2020·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Pd Dr Khalil Zakeri Lori
Nov 24, 2017·NPG Asia Materials·Koji SekiguchiKyung-Jin Lee
Aug 19, 2020·Nature Communications·Michal KobeckiManfred Bayer
Sep 7, 2019·Physical Review Letters·N SatoH Schultheiss
Aug 20, 2017·Scientific Reports·R GieniuszA Maziewski
Apr 23, 2021·ACS Applied Materials & Interfaces·Surya Narayan PandaAnjan Barman
Mar 5, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Anjan BarmanM Winklhofer
Apr 24, 2020·Nano Letters·Liang-Juan ChangShang-Fan Lee

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Methods Mentioned

BETA
light
atomic-force microscopy

Software Mentioned

MuMax3
COMSOL Multiphysics

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