Propagation length of spin waves in a conducting system

J. Gomez (1) , Florent Pérez (1) , Bernard Jusserand (1) , G. Karczewzski , T. Wojtowicz (2)

1 INSP - Institut des Nanosciences de Paris
2 Institute of Physics

We have studied propagating spin-flip waves excited in a two dimensional electron gas by angle resolved magneto-Raman spectroscopy. The damping rate of these excitations follows a quadratic law, as a function of q, and the group velocity is linearly dependent with q. Consequently the propagation length presents a maximum for a given q. We have estimated and analyzed the maximum propagation length showing that the spin waves are drastically attenuated in a microscopic distance, even in the intrinsic regime.

Domaines: Matière Condensée [cond-mat]

J. Gomez, Florent Pérez, Bernard Jusserand, G. Karczewzski, T. Wojtowicz. Propagation length of spin waves in a conducting system. HORIBA INTERNATIONAL CONFERENCE: THE 19TH INTERNATIONAL CONFERENCE ON THE APPLICATION OF HIGH MAGNETIC FIELDS IN SEMICONDUCTOR PHYSICS AND NANOTECHNOLOGY, 2011, DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND, Unknown Region. ⟨10.1088/1742-6596/334/1/012055⟩. ⟨hal-01229200⟩