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- Dynamics of the localized spins interacting with two-dimensional electron gas: Coexistence of mixed and pure modes doi link

Auteur(s): Vladimirova M., Cronenberger S., Barate P., Scalbert D., Teran F. J., Dmitriev A. P.

(Article) Publié: Physical Review B, vol. 78 p.081305 (2008)


Ref HAL: hal-00440483_v1
DOI: 10.1103/PhysRevB.78.081305
WoS: 000259406900006
Exporter : BibTex | endNote
22 Citations
Résumé:

Time-resolved Kerr rotation experiments show that two kinds of spin modes exist in diluted magnetic semiconductor quantum wells: (i) strongly coupled electron-magnetic ion spin excitations and (ii) excitations of magnetic ion spin subsystem decoupled from electron spins. The coexistence of these two kinds of spin precession modes cannot be understood in terms of average spins but requires a description, which goes beyond the mean-field approximation.