Microscopic theory of exciton and trion polaritons in doped monolayers of transition metal dichalcogenides

Zhumagulov, Yaroslav Vladimirovich and Chiavazzo, Salvatore and Gulevich, Dmitry Romanovich and Perebeinos, Vasili and Shelykh, Ivan Andreevich and Kyriienko, Oleksandr (2022) Microscopic theory of exciton and trion polaritons in doped monolayers of transition metal dichalcogenides. NPJ COMPUTATIONAL MATERIALS, 8 (1): 92. ISSN 2057-3960

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Abstract

We study a doped transition metal dichalcogenide (TMDC) monolayer in an optical microcavity. Using the microscopic theory, we simulate spectra of quasiparticles emerging due to the interaction of material excitations and a high-finesse optical mode, providing a comprehensive analysis of optical spectra as a function of Fermi energy and predicting several modes in the strong light-matter coupling regime. In addition to exciton-polaritons and trion-polaritons, we report polaritonic modes that become bright due to the interaction of excitons with free carriers. At large doping, we reveal strongly coupled modes corresponding to excited trions that hybridize with a cavity mode. We also demonstrate that the increase of carrier concentration can change the nature of the system's ground state from the dark to the bright one. Our results offer a unified description of polaritonic modes in a wide range of free electron densities.

Item Type: Article
Uncontrolled Keywords: GIANT BANDGAP RENORMALIZATION; INTEGRATED-CIRCUITS
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian
Depositing User: Dr. Gernot Deinzer
Date Deposited: 15 Feb 2024 07:01
Last Modified: 15 Feb 2024 07:01
URI: https://pred.uni-regensburg.de/id/eprint/57575

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