Intrinsic damping of spin waves by spin current in conducting two-dimensional systems
نویسندگان
چکیده
Angle resolved magneto-Raman scattering has been performed on spin-polarized two dimensional electron gas embedded in Cd1−xMnxTe quantum wells to explore the intrinsic damping of propagating spin waves modes with in plane momentum q. The damping rate η follows a quadratic law η = η0+η2q 2 due to losses in the spin-current driven by the magnetization in qualitative agreement with Phys.Rev.B 78, 020404(R) 2009. As a consequence, the propagation length of a spin wave in a conducting system has an intrinsic maximum of importance for spin-wave based spintronics.
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تاریخ انتشار 2017