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4 November 2016 Many-body and stark effects in transition metal dichalcogenides monolayers (Conference Presentation)
Benedikt Scharf, Tobias Frank, Martin Gmitra, Jaroslav Fabian, Igor Zutic, Vasili Perebeinos
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Proceedings Volume 9931, Spintronics IX; 99313E (2016) https://doi.org/10.1117/12.2237912
Event: SPIE Nanoscience + Engineering, 2016, San Diego, California, United States
Abstract
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.
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Benedikt Scharf, Tobias Frank, Martin Gmitra, Jaroslav Fabian, Igor Zutic, and 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
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KEYWORDS
Transition metals
Spintronics
Excitons
Dielectrics
Electro optics
Electro-optical engineering
Current controlled current source
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