Intrinsic exciton-state mixing and nonlinear optical properties in transition metal dichalcogenide monolayers - INSA Toulouse - Institut National des Sciences Appliquées de Toulouse Access content directly
Journal Articles Physical Review B: Condensed Matter and Materials Physics (1998-2015) Year : 2017

Intrinsic exciton-state mixing and nonlinear optical properties in transition metal dichalcogenide monolayers

Abstract

Optical properties of transition metal dichalcogenides monolayers are controlled by Wannier-Mott excitons forming a series of 1s,2s,2p,... hydrogen-like states. We develop the theory of the excited excitonic states energy spectrum fine structure. We predict that p- and s-shell excitons are mixed due to the specific D3h point symmetry of the transition metal dichalcogenide monolayers. Hence, both s- and p-shell excitons are active in both single- and two-photon processes, providing an efficient mechanism of second harmonic generation. The corresponding contribution to the nonlinear susceptibility is calculated.
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Dates and versions

hal-02056459 , version 1 (04-03-2019)

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  • HAL Id : hal-02056459 , version 1

Cite

M. Glazov, L. Golub, Gang Wang, Xavier Marie, Thierry Amand, et al.. Intrinsic exciton-state mixing and nonlinear optical properties in transition metal dichalcogenide monolayers. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2017, 95 (3). ⟨hal-02056459⟩
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