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,Rupert Huber

2022 Conference on Lasers and Electro-Optics (CLEO)（2022）

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摘要

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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关键词

excitonic insulator-metal transition,twisted bilayer,many-body interactions,electron-hole liquid,ultrafast polarization nanoscopy,Mott transition,transition-metal dichalcogenide bilayer,density,spatiotemporal dynamics,WSe2

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