Ultrafast nanoscopy of an excitonic insulator-metal transition in twisted bilayer WSe2

Martin Zizlsperger; Thomas Siday; Fabian Sandner; Samuel Brem; Samuel Brem; Raul Perea-Causin; Felix Schiegl; Svenja Nerreter; Markus Plankl; Philipp Merkl; Fabian Mooshammer; Fabian Mooshammer; Markus A. Huber; Ermin Malic; Ermin Malic; Rupert Huber

doi:10.1364/CLEO_QELS.2022.FM4N.4

Conference on Lasers and Electro-Optics
Technical Digest Series (Optica Publishing Group, 2022),
paper FM4N.4
•https://doi.org/10.1364/CLEO_QELS.2022.FM4N.4

Ultrafast nanoscopy of an excitonic insulator-metal transition in twisted bilayer WSe₂

Martin Zizlsperger, Thomas Siday, Fabian Sandner, Samuel Brem, Raul Perea-Causin, Felix Schiegl, Svenja Nerreter, Markus Plankl, Philipp Merkl, Fabian Mooshammer, Markus A. Huber, Ermin Malic, and Rupert Huber

CLEO: QELS_Fundamental Science 2022

San Jose, California United States
15–20 May 2022
ISBN: 978-1-957171-05-0

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Novel Spectroscopy for Probing Multibody Dynamics (FM4N)

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M. Zizlsperger, T. Siday, F. Sandner, S. Brem, R. Perea-Causin, F. Schiegl, S. Nerreter, M. Plankl, P. Merkl, F. Mooshammer, M. A. Huber, E. Malic, and R. Huber, "Ultrafast nanoscopy of an excitonic insulator-metal transition in twisted bilayer WSe2," in Conference on Lasers and Electro-Optics, Technical Digest Series (Optica Publishing Group, 2022), paper FM4N.4.

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Abstract

Many-body interactions between excitons in a transition-metal dichalcogenide bilayer drive a transition into an electron-hole liquid at high densities. Using ultrafast polarization nanoscopy, we unveil spatiotemporal dynamics of this continuous Mott transition on the nanoscale.

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