Valley pseudospin relaxation of charged excitons in monolayer MoTe2
Abstract
Zeeman effect induced by the magnetic field introduces a splitting between the two valleys at K+ and K- points of the Brillouin zone in monolayer semiconducting transition metal dichalcogenides. In consequence, the photoluminescence signal exhibits a field dependent degree of circular polarization. We present a comprehensive study of this effect in the case of a trion in monolayer MoTe2, showing that although time integrated data allows us to deduce a g-factor of the trion state, such an analysis cannot be substantiated by the timescales revealed in the time-resolved experiments.
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