Coherent transport of energy and polarization between monolayers of transition metal dichalcogenides. (1st September 2021)

• Record Type: Journal Article
• Authors: Sadeghi, Seyed M; Wu, Judy Z
• Is Part Of: 2D materials. Volume 8:Number 4(2021)
• Publication Date: 2021-09-01
• Subjects: coherent transport -- transition metal dichalcogenide -- plasmons -- quantum conjugate -- valley -- quantum coherence; Graphene -- Periodicals; Materials science -- Periodicals; Nanostructured materials -- Periodicals; 620.115
• DOI: 10.1088/2053-1583/ac1eaa
• Languages: English
• ISSNs: 2053-1583

Abstract

Abstract: We theoretically study coherent transport of energy and polarization between two monolayers of transition metal dichalcogenide (TMD) located at different locations using valley quantum coherence. The structure that supports such a process includes a monolayer of MoS2 (acceptor) placed on a ferromagnetic substrate, and a hybrid structure consisting of an Ag nanoantenna and a WS2 monolayer (donor). Our results show that when such a system interacts with a circularly polarized light, excitation energy and polarization can be transferred from the K valley of the WS2 monolayer to the K ' valley of the MoS2 monolayer via plasmonically-mediated coherent inter-monolayer mixing of the spin valleys. We show these processes allow ultrafast spread of quantum properties, including transfer of collective resonances from the donor to the acceptor. The optical switching of the energy and polarization transport is investigated.