Ultrafast Nanoscopy of an Exciton Mott Transition in Twisted Bilayer WSe2
Paper i proceeding, 2022
The density-driven transition of an exciton gas into a plasma of unbound electron-hole pairs has provided a compelling testbed for exploring many-body physics. Here, we use ultrafast polarization nanoscopy to trace a Mott transition of excitons in a twisted bilayer of WSe2. An initially monomolecular recombination of optically dark excitons continuously evolves into bimolecular recombination of unbound electrons and holes as the density is increased. Furthermore, we reveal directly how the Mott transition varies on nanometer length scales, demonstrating how the technique is indispensable in the study of intrinsically disordered van der Waals materials.
Författare
Thomas Siday
Universität Regensburg
Fabian Sandner
Universität Regensburg
Samuel Brem
Chalmers, Fysik, Kondenserad materie- och materialteori
Philipps-Universität Marburg
Martin Zizlsperger
Universität Regensburg
Raul Perea Causin
Chalmers, Fysik, Kondenserad materie- och materialteori
Felix Schiegl
Universität Regensburg
Svenja Nerreter
Universität Regensburg
Markus Plankl
Universität Regensburg
Philipp Merkl
Universität Regensburg
F. Mooshammer
Universität Regensburg
Columbia University
Markus A. Huber
Universität Regensburg
Ermin Malic
Philipps-Universität Marburg
Chalmers, Fysik, Kondenserad materie- och materialteori
Rupert Huber
Universität Regensburg
International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
21622027 (ISSN) 21622035 (eISSN)
Vol. 2022-August9781728194271 (ISBN)
47th International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2022
Delft, Netherlands,
Delft, Netherlands,
Ämneskategorier
Atom- och molekylfysik och optik
Annan fysik
Den kondenserade materiens fysik
DOI
10.1109/IRMMW-THz50927.2022.9895814