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Experimental and theoretical studies on optical orientation and spin-dependent recombination in a semiconductor in a magnetic field under the normal incidence of circularly polarized radiation onto the sample surface are reviewed. The experiments were carried out on GaAs1 –xNx solid solutions, in which Ga2+ interstitial displacement defects play the role of deep paramagnetic centers responsible for...
Monolayers of transition metal dichalcogenides, namely, molybdenum and tungsten disulfides and diselenides demonstrate unusual optical properties related to the spin–valley locking effect. Particularly, excitation of monolayers by circularly polarized light selectively creates electron–hole pairs or excitons in non‐equivalent valleys in momentum space, depending on the light helicity. This allows...
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