Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/10566
 Title: Spin-orbit effects on the Larmor dispersion relation in GaAs quantum wells Author: Malet i Giralt, FrancescLipparini, EnricoBarranco Gómez, ManuelPi Pericay, Martí Keywords: SemiconductorsSpin (Física nuclear)Electrònica quànticaSemiconductorsNuclear spinQuantum electronics Issue Date: 2006 Publisher: The American Physical Society Abstract: We have studied the relevance of spin-orbit coupling to the dispersion 00009 relation of the Larmor resonance observed in inelastic light scattering and electron-spin resonance experiments on GaAs quantum wells. We show that the spin-orbit interaction, here described by a sum of Dresselhaus and Bychkov-Rashba terms, couples Zeeman and spin-density excitations. We have evaluated its contribution to the spin splitting as a function of the magnetic field $B$, and have found that in the small $B$ limit, the spin-orbit interaction does not contribute to the spin splitting, whereas at high magnetic fields it yields a $B$ independent contribution to the spin splitting given by $2(\lambda_R^2-\lambda_D^2)$, with $\lambda_{R,D}$ being the intensity of the Bychkov-Rashba and Dresselhaus spin-orbit terms. Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.73.125302 It is part of: Physical Review B, 2006, vol. 73, núm. 12, p. 125302-1-125302-5 Related resource: http://doi.org/10.1103/PhysRevB.73.125302 URI: http://hdl.handle.net/2445/10566 ISSN: 0163-1829 Appears in Collections: Articles publicats en revistes (Física Quàntica i Astrofísica)

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