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Moiré phonons in twisted MoSe2–WSe2 heterobilayers and their correlation with interlayer excitons

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Parzefall, Philipp ; Holler, Johannes ; Scheuck, Marten ; Beer, Andreas ; Lin, Kai-Qiang ; Peng, Bo ; Monserrat, Bartomeu ; Nagler, Philipp ; Kempf, Michael ; Korn, Tobias ; Schüller, Christian
License: Creative Commons Attribution 4.0
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Date of publication of this fulltext: 16 Aug 2021 11:35


We report about the investigation of twisted MoSe2 homo- and MoSe2–WSe2 heterobilayers by means of low-frequency Raman spectroscopy (LFRS) and low-temperature micro photoluminescence (µPL). In room-temperature LFRS experiments on both, twisted MoSe2 homobilayers and twisted MoSe2–WSe2 heterobilayers, we observe moiré phonons, i.e. folded acoustic phonon modes due to the moiré superlattice. In the ...


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