Electric-field driven long-lived spin excitations on a cylindrical surface with spin-orbit interaction

2008/08/01 by P. Kleinert, Kleinert, P.
Physics and Astronomy · #Magnetic properties of thin films #Quantum and electron transport phenomena #Quantum, superfluid, helium dynamics #cond-mat.mtrl-sci #cond-mat.stat-mech

paper · pdf · doi:10.48550/arxiv.0808.0069

11 pages

arxiv created 2008/08/01 · arxiv updated 2009/12/01

Abstract

Based on quantum-kinetic equations, coupled spin-charge drift-diffusion equations are derived for a two-dimensional electron gas on a cylindrical surface. Besides the Rashba and Dresselhaus spin-orbit interaction, the elastic scattering on impurities, and a constant electric field are taken into account. From the solution of the drift-diffusion equations, a long-lived spin excitation is identified for spins coupled to the Rashba term on a cylinder with a given radius. The electric-field driven weakly damped spin waves are manifest in the components of the magnetization and have the potential for non-ballistic spin-device applications.

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