Author:
Liu X.,Liu P.,Yuan H. C.,Shi J. Y.,Wang H. L.,Nie S. H.,Jin F.,Zheng Z.,Yu X. Z.,Zhao J. H.,Zhao H. B.,Lüpke G.
Abstract
AbstractSpin angular momentum transfer in magnetic bilayers offers the possibility of ultrafast and low-loss operation for next-generation spintronic devices. We report the field- and temperature- dependent measurements on the magnetization precessions in Co2FeAl/(Ga,Mn)As by time-resolved magneto-optical Kerr effect. Analysis of the effective Gilbert damping and phase shift indicates a clear signature of an enhanced dynamic exchange coupling between the two ferromagnetic (FM) layers due to the reinforced spin pumping at resonance. The temperature dependence of the dynamic exchange-coupling reveals a primary contribution from the ferromagnetism in (Ga,Mn)As.
Funder
U.S. Department of Energy
National Natural Science Foundation of China
National Key Research and Development Program of China
National Key Basic Research Program, China
Publisher
Springer Science and Business Media LLC
Cited by
2 articles.
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