We use a finite-difference model that is capable of describing the single state spin dynamics in a double-barrier AlGaAs heterostructure. The use of Green's functions enables a description of the double-barrier structure by a finite matrix while the interaction with contacts is described by appropriate self-energies. To account for interface roughness scattering, a self-energy ΣIR(E; k) is derived within the random phase approximation. The dominant part is due to in-plane momentum relaxation while a smaller part describing spin-flip scattering is neglected. The former only decreases the state lifetime while the latter can also affect the spin precession frequency.
|Number of pages||3|
|Journal||Acta Physica Polonica A|
|Publication status||Published - 1 Oct 2009|
|Event||International School and Conference on Photonics 2009 - Belgrade, Serbia|
Duration: 24 Aug 2009 → 28 Aug 2009