Valley pseudospin relaxation of charged excitons in monolayer MoTe${}_2$

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 MoTe${}_2$, 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.

References in corpus (8)

• Electric Field Effect in Atomically Thin Carbon Films
• Valley polarization in MoS2 monolayers by optical pumping
• Valley filter and valley valve in graphene
• Magnetic Control of Valley Pseudospin in Monolayer WSe2
• Valley Zeeman Effect in Elementary Optical Excitations of a Monolayer WSe2
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Cited by in corpus (1)

• Prolonging Valley Polarization Lifetime through Gate-Controlled Exciton-to-Trion Conversion in Monolayer Molybdenum Ditelluride