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arXiv · 2005.14095

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

Tomasz Smoleński·Tomasz Kazimierczuk·Mateusz Goryca·Karol Nogajewski·Marek Potemski·Piotr Kossacki
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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.

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Tomasz Smoleński, Tomasz Kazimierczuk, Mateusz Goryca, Karol Nogajewski, Marek Potemski, Piotr Kossacki. 2020-05-28. Valley pseudospin relaxation of charged excitons in monolayer MoTe$_2$. https://doi.org/10.1088/1361-648x/abb1cb

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