2004/10/31 by U. Beckmann, T. Damker, H. Böttger +1
Engineering · Physics and Astronomy · #Advanced Memory and Neural Computing #Quantum and electron transport phenomena #Quantum optics and atomic interactions #cond-mat.dis-nn
paper · pdf · doi:10.1103/physrevb.71.205311
published as Phys. Rev. B 71, 205311 (2005) · 12 pages, 6 figures, some clarifications added
arxiv created 2005/01/18 · openalex publication_date 2005/05/23 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The influence of Rashba spin-orbit interaction on the spin dynamics of a topologically disordered hopping system is studied in this paper. This is a significant generalization of a previous investigation, where an ordered (polaronic) hopping system has been considered instead. It is found that in the limit where the Rashba length is large compared to the typical hopping length, the spin dynamics of a disordered system can still be described by the expressions derived for an ordered system, under the provision that one takes into account the frequency dependence of the diffusion constant and the mobility (which are determined by charge transport and are independent of spin). With these results we are able to make explicit the influence of disorder on spin related quantities as, e.g., the spin lifetime in hopping systems.