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Intrinsic damping of spin waves by spin current in conducting two-dimensional systems

J. Gómez, F. Perez, E. M. Hankiewicz, B. Jusserand, G. Karczewski, and T. Wojtowicz
Phys. Rev. B 81, 100403(R) – Published 2 March 2010

Abstract

Angle-resolved magneto-Raman scattering has been performed on spin-polarized two-dimensional electron gas embedded in Cd1xMnxTe quantum wells to explore the intrinsic damping of propagating spin-wave modes with in plane momentum q. The damping rate η follows a quadratic law η=η0+η2q2 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.

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  • Received 5 February 2010

DOI:https://doi.org/10.1103/PhysRevB.81.100403

©2010 American Physical Society

Authors & Affiliations

J. Gómez1, F. Perez1, E. M. Hankiewicz2, B. Jusserand1, G. Karczewski3, and T. Wojtowicz3

  • 1Institut des Nanosciences de Paris, CNRS/Université Paris VI, Paris, France
  • 2Institut für Theoretische Physik und Astrophysik, Universität Würzburg, Germany
  • 3Institute of Physics, Polish Academy of Sciences, Warsaw, Poland

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Issue

Vol. 81, Iss. 10 — 1 March 2010

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