Photo‐Induced Tellurium Segregation in MoTe <sub>2</sub>
نویسندگان
چکیده
We report on the coherent phonon spectroscopy of polymorphic MoTe2 single crystals using a femtosecond-pulsed laser to investigate relationship between structural phase transitions and photo-thermal effects induced by high-density excitation. Even when femtosecond pulsed was used, which generally induces fewer heat accumulation than case for CW laser, tellurium segregation observed in spectra with increasing excitation density, while no transition among polymorphs observed. The use higher photon-energy excitation, however, found suppress segregation. This article is protected copyright. All rights reserved.
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ژورنال
عنوان ژورنال: Physica Status Solidi (rrl)
سال: 2022
ISSN: ['1862-6254', '1862-6270']
DOI: https://doi.org/10.1002/pssr.202100633