EPJ Web of Conferences
Volume 40, 2013JEMS 2012 – Joint European Magnetic Symposia
|Number of page(s)||4|
|Section||Spin excitations and ultrafast dynamics|
|Published online||14 January 2013|
Anisotropic spin-orbit induced splitting of intersubband spin plasmons*
Institut des Nanosciences de Paris, CNRS/Université
Paris VI, Paris
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: firstname.lastname@example.org
The anisotropic splitting of intersubband spin plasmons, resulting from spin-orbit coupling, is studied by angle-resolved inelastic light scattering on a -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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