Spin Precession of Quasi Bound States in Heterostructures with Spin Orbit Interaction

G. Isića,b, D. Indjina, Z. Ikonića, V. Milanovićc, J. Radovanovićc and P. Harrisona a School of Electronic and Electrical Engineering, University of Leeds, United Kingdom b Institute of Physics, Belgrade, Serbia c School of Electrical Engineering, University of Belgrade, Serbia

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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 ΣpIR(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.

DOI: 10.12693/APhysPolA.116.513 PACS numbers: 71.70.Ej, 73.20.At, 73.21.Fg