Energy-Dependent Electron-Electron Scattering and Spin Dynamics in a Two Dimensional Electron Gas

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dc.creatorLeylanda, W. J. H.
dc.creatorHarley, R. T.
dc.creatorHenini, M.
dc.creatorShields, A. J.
dc.creatorFarrer, I.
dc.creatorRitchie, D. A.
dc.date2008-03-08
dc.date.accessioned2026-07-07T09:25:50Z
dc.date.available2026-07-07T09:25:50Z
dc.descriptionMeasurements of spin dynamics of electrons in a degenerate two dimensional electron gas, where the Dyakonov-Perel mechanism is dominant, have been used to investigate the electron scattering time (tp*) as a function of energy near the Fermi energy. Close to the Fermi energy the spin evolution is oscillatory, indicating a quasi-collision-free regime of spin dynamics. As the energy is increased a transition to exponential, collision-dominated, spin decay occurs. The frequency and the value of tp* are extracted using a Monte Carlo simulation method. At the Fermi energy tp* is very close to the ensemble momentum relaxation time (tp) obtained from the electron mobility. For higher energies tp* falls quadratically, consistent with theoretical expectations for the onset of electron-electron scattering which is inhibited by the Pauli principle at the Fermi energy.
dc.description9 pages 3 figures
dc.identifierhttps://arxiv.org/abs/0803.1230
dc.identifierhttp://arxiv.org/abs/0803.1230
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/156541
dc.subjectOther Condensed Matter
dc.subjectMesoscale and Nanoscale Physics
dc.titleEnergy-Dependent Electron-Electron Scattering and Spin Dynamics in a Two Dimensional Electron Gas
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