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Dynamically tuned non-classical light emission from atomic defects in hexagonal boron nitride
Abstract Luminescent defects in hexagonal boron nitride (h-BN) have recently emerged as a promising platform for non-classical light emission. On-chip solutions, however, require techniques for...
S Lazić, A Espinha, S Pinilla Yanguas, C Gibaja, F Zamora, P Ares, M Chhowalla, WS Paz, JJP Burgos, A Hernández-Mínguez, PV Santos, HP van der Meulen
Sep 16, 2020
Narrow-band high-lying excitons with negative-mass electrons in monolayer WSe 2
Kai-Qiang Lin, Chin Shen Ong, Sebastian Bange, Paulo E. Faria Junior, Bo Peng, Jonas D. Ziegler, Jonas Zipfel, Christian Bäuml, Nicola Paradiso, Kenji Watanabe, Takashi Taniguchi, Christoph Strunk, Bartomeu Monserrat, Jaroslav Fabian, Alexey Chernikov, Diana Y. Qiu, Steven G. Louie, John M. Lupton
Sep 17, 2021
Abstract: Monolayer transition-metal dichalcogenides (TMDCs) show a wealth of exciton physics. Here, we report the existence of a new excitonic species, the high-lying exciton (HX), in single-layer WSe2 with an energy of ~3.4...
Confinement of long-lived interlayer excitons in WS 2 /WSe 2 heterostructures
Alejandro R.-P. Montblanch, Dhiren M. Kara, Ioannis Paradisanos, Carola M. Purser, Matthew S. G. Feuer, Evgeny M. Alexeev, Lucio Stefan, Ying Qin, Mark Blei, Gang Wang, Alisson R. Cadore, Pawel Latawiec, Marko Lončar, Sefaattin Tongay, Andrea C. Ferrari, Mete Atatüre
Jun 07, 2021
Abstract: Interlayer excitons in layered materials constitute a novel platform to study many-body phenomena arising from long-range interactions between quantum particles. Long-lived excitons are required to achieve high...
Twist-angle engineering of excitonic quantum interference and optical nonlinearities in stacked 2D semiconductors
Kai-Qiang Lin, Paulo E. Faria Junior, Jonas M. Bauer, Bo Peng, Bartomeu Monserrat, Martin Gmitra, Jaroslav Fabian, Sebastian Bange, John M. Lupton
May 20, 2021
Abstract: Twist-engineering of the electronic structure in van-der-Waals layered materials relies predominantly on band hybridization between layers. Band-edge states in transition-metal-dichalcogenide semiconductors are...
Cooling low-dimensional electron systems into the microkelvin regime.
Lev V Levitin, Harriet van der Vliet, Terje Theisen, Stefanos Dimitriadis, Marijn Lucas, Antonio D Corcoles, Ján Nyéki, Andrew J Casey, Graham Creeth, Ian Farrer, David Ritchie, James T Nicholls, John Saunders
Feb 03, 2022
Two-dimensional electron gases (2DEGs) with high mobility, engineered in semiconductor heterostructures host a variety of ordered phases arising from strong correlations, which emerge at sufficiently low temperatures. The 2DEG...
Twist-angle engineering of excitonic quantum interference and optical nonlinearities in stacked 2D semiconductors
Kai-Qiang Lin, Paulo E. Faria Junior, Jonas M. Bauer, Bo Peng, Bartomeu Monserrat, Martin Gmitra, Jaroslav Fabian, Sebastian Bange, John M. Lupton
Mar 10, 2021
Abstract: Twist-engineering of the electronic structure in van-der-Waals layered materials relies predominantly on band hybridization between layers. Band-edge states in transition-metal-dichalcogenide semiconductors are...
Optical control of exciton spin dynamics in layered metal halide perovskites via polaronic state formation.
Sean A Bourelle, Franco VA Camargo, Soumen Ghosh, Timo Neumann, Tim WJ van de Goor, Ravichandran Shivanna, Thomas Winkler, Giulio Cerullo, Felix Deschler
Jun 09, 2022
One of the open challenges of spintronics is to control the spin relaxation mechanisms. Layered metal-halide perovskites are an emerging class of semiconductors which possess a soft crystal lattice that strongly couples...