Benedikt Scharf,1 Tobias Frank,2 Martin Gmitra,2 Jaroslav Fabian,2 Igor Zutic,3 Vasili Perebeinos4
1The State Univ. of New York (United States) 2Univ. Regensburg (Germany) 3Univ. at Buffalo (United States) 4Skolkovo Institute of Science and Technology (Russian Federation)
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Inversion symmetry breaking combined with strong spin-orbit coupling in transition metal dichalcogenides such as MoS2 offers important opportunities for spintronics. We investigate excitons in MoS2 monolayers in an applied in-plane electric field. Tight-binding and Bethe-Salpeter equation calculations predict a large quadratic Stark shift. The scaling of the Stark shifts with the exciton binding energy and the dielectric environment provides a path to engineering the MoS2 electro-optical response. Our results suggest that the excitonic Stark effect can be observed experimentally in a MoS2 monolayer and we explain its implications for spintronic devices.
Benedikt Scharf,Tobias Frank,Martin Gmitra,Jaroslav Fabian,Igor Zutic, andVasili Perebeinos
"Many-body and stark effects in transition metal dichalcogenides monolayers
(Conference Presentation)", Proc. SPIE 9931, Spintronics IX, 99313E (4 November 2016); https://doi.org/10.1117/12.2237912
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Benedikt Scharf, Tobias Frank, Martin Gmitra, Jaroslav Fabian, Igor Zutic, Vasili Perebeinos, "Many-body and stark effects in transition metal dichalcogenides monolayers
(Conference Presentation)," Proc. SPIE 9931, Spintronics IX, 99313E (4 November 2016); https://doi.org/10.1117/12.2237912