Abstract
Angle-resolved magneto-Raman scattering has been performed on spin-polarized two-dimensional electron gas embedded in quantum wells to explore the intrinsic damping of propagating spin-wave modes with in plane momentum . The damping rate follows a quadratic law due to losses in the spin current driven by the magnetization in qualitative agreement with Phys. Rev. B 78, 020404(R) (2008). 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.
- Received 5 February 2010
DOI:https://doi.org/10.1103/PhysRevB.81.100403
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