Spin Separation in Self-Organized Quantum Dots Under Optical Orientation of Electrons
RUSSIAN ACADEMY OF SCIENCES SAINT PETERSBURG IOFFE PHYSICAL-TECHNICAL INST
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Optical methods widely used in studying the arrays of self-organized semiconductor quantum dots QDs are even more effective when they are supplied with measuring polarization which provides an access to additional degrees of freedom related to carrier spins. In our previous work we have shown that time-resolved picosecond techniques allow to observe transients of polarization of electrons in QDs under optical orientation conditions. The present work is aimed at studying the dynamics of population of discrete energy levels by spin-polaiized electrons in QDs. In particular. we present a detailed study of spin separation, i.e. redistribution of the average spin of electrons among their energy levels as a result of energy relaxation limited by Pauli principle.
- Solid State Physics