Malet i Giralt, FrancescLipparini, EnricoBarranco Gómez, ManuelPi Pericay, Martí2009-12-282009-12-2820060163-1829https://hdl.handle.net/2445/10566We 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.5 p.application/pdfeng(c) The American Physical Society, 2006SemiconductorsSpin (Física nuclear)Electrònica quànticaSemiconductorsNuclear spinQuantum electronicsinfo:eu-repo/semantics/article549838info:eu-repo/semantics/openAccess