Valley pseudospin relaxation of charged excitons in monolayer MoTe2. (13th October 2020)

• Record Type: Journal Article
• Authors: Smoleński, T; Kazimierczuk, T; Goryca, M; Nogajewski, K; Potemski, M; Kossacki, P
• Is Part Of: Journal of physics. Volume 33:Number 2(2021)
• Publication Date: 2020-10-13
• Subjects: valley pseudospin -- monolayer MoTe2 -- relaxation dynamics; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/abb1cb
• Languages: English
• ISSNs: 0953-8984

Abstract

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.