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Proceedings Paper

Discrete interactions between a few interlayer excitons trapped at a MoSe2-WSe2 heterointerface (Conference Presentation)
Author(s): Malte Kremser; Mauro Brotons-Gisbert; Moritz Meyer; Johannes Knörzer; Matteo Barbone; Brian D. Gerardot; Jonathan J Finley; Kai Müller

Paper Abstract

We present our results on trapping a tunable number of interlayer excitons (IX) within a nanoscale confinement potential induced by placing a MoSe2-WSe2 hetero-bilayer onto an array of nanopillars. The mean occupation of the IX trap is controlled via the optical excitation level and discrete sharp-line emission from different configurations of interacting IXs is observed. The intensities of these features exhibit characteristic near linear, quadratic, cubic and quartic power dependencies, which allows us to identify them as different multiparticle configurations of 1-4 IX and we directly measure the hierarchy of dipolar and exchange interactions as the number of increases.

Paper Details

Date Published: 10 March 2020
Proc. SPIE 11282, 2D Photonic Materials and Devices III, 1128208 (10 March 2020); doi: 10.1117/12.2548196
Show Author Affiliations
Malte Kremser, Walter Schottky Institut (Germany)
Mauro Brotons-Gisbert, Heriot-Watt Univ. (United Kingdom)
Moritz Meyer, Walter Schottky Institut (Germany)
Johannes Knörzer, Max-Planck-Institut für Quantenoptik (Germany)
Matteo Barbone, Walter Schottky Institut (Germany)
Brian D. Gerardot, Heriot-Watt Univ. (United Kingdom)
Jonathan J Finley, Walter Schottky Institute (Germany)
Kai Müller, Walter Schottky Institut (Germany)

Published in SPIE Proceedings Vol. 11282:
2D Photonic Materials and Devices III
Arka Majumdar; Carlos M. Torres Jr.; Hui Deng, Editor(s)

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