Coherent transfer of spin angular momentum by evanescent spin waves within antiferromagnetic NiO
Dąbrowski, M; Nakano, T; Burn, DM; et al.Frisk, A; Newman, DG; Klewe, C; Li, Q; Yang, M; Shafer, P; Arenholz, E; Hesjedal, T; van der Laan, G; Qiu, ZQ; Hicken, RJ
Date: 26 April 2020
Journal
Physical Review Letters
Publisher
American Physical Society (APS)
Publisher DOI
Abstract
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 ...
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.
Physics and Astronomy
Faculty of Environment, Science and Economy
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