Coulomb-driven organization and enhancement of spin-orbit fields in collective spin excitations

Spin-orbit (SO) fields in a spin-polarized electron gas are studied by angle-resolved inelastic light scattering on a CdMnTe quantum well. We demonstrate a striking organization and enhancement of SO fields acting on the collective spin excitation (spin-flip wave). While individual electronic SO fie...

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Published in:Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2013-03, Vol.87 (12), Article 121303
Main Authors: Baboux, F., Perez, F., Ullrich, C. A., D'Amico, I., Karczewski, G., Wojtowicz, T.
Format: Article
Language:English
Subjects:
Condensed Matter
Conduction
Dynamical systems
Electronics
Excitation
Organizations
Physics
Quantum wells
Spin dynamics
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cited_by cdi_FETCH-LOGICAL-c385t-e279e7f61057e43cc3ee1f9133271c19c230f84e5cc8469423d32706dbc4b5873
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container_issue 12
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container_title Physical review. B, Condensed matter and materials physics
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creator Baboux, F.
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Wojtowicz, T.
description Spin-orbit (SO) fields in a spin-polarized electron gas are studied by angle-resolved inelastic light scattering on a CdMnTe quantum well. We demonstrate a striking organization and enhancement of SO fields acting on the collective spin excitation (spin-flip wave). While individual electronic SO fields have a broadly distributed momentum dependence, giving rise to D'yakonov-Perel' dephasing, the collective spin dynamics is governed by a single collective SO field which is drastically enhanced due to many-body effects. The enhancement factor is experimentally determined. These results provide a powerful indication that these constructive phenomena are universal to collective spin excitations of conducting systems.
doi_str_mv 10.1103/PhysRevB.87.121303
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source American Physical Society:Jisc Collections:APS Read and Publish 2023-2025 (reading list)
subjects Condensed Matter
Conduction
Dynamical systems
Electronics
Excitation
Organizations
Physics
Quantum wells
Spin dynamics
title Coulomb-driven organization and enhancement of spin-orbit fields in collective spin excitations
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