| Issue |
EPJ Web of Conferences
Volume 40, 2013
JEMS 2012 – Joint European Magnetic Symposia
|
|
|---|---|---|
| Article Number | 18002 | |
| Number of page(s) | 4 | |
| Section | Spin excitations and ultrafast dynamics | |
| DOI | https://doi.org/10.1051/epjconf/20134018002 | |
| Published online | 14 January 2013 | |
https://doi.org/10.1051/epjconf/20134018002
Anisotropic spin-orbit induced splitting of intersubband spin plasmons*
1
Institut des Nanosciences de Paris, CNRS/Université
Paris VI, Paris
75005,
France
2
Department of Physics and Astronomy, University of
Missouri, Columbia, Missouri
65211,
USA
3
Department of Physics, University of York,
York
YO10 5DD,
United Kingdom
a e-mail: baboux@insp.upmc.fr
The anisotropic splitting of intersubband spin plasmons, resulting from spin-orbit coupling, is studied by angle-resolved inelastic light scattering on a [001]-oriented GaAs/AlGaAs quantum well. Confirming theoretical predictions made in [C. A. Ullrich and M. A. Flatté, Phys. Rev. B 68, 235310 (2003)], this splitting is proven to exhibit a characteristic two-fold symmetry with the in-plane orientation, and to increase with increasing modulus of the excitation momentum. This opens the way to a more complete investigation, aiming at evidencing the existence of a collective spin-orbit field driving these excitations.
© Owned by the authors, published by EDP Sciences, 2013
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