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Conferences > CLEOPR > 2022 > CTuP3C > CTuP3C_03

Interlayer Phonon Modes of MoSe2 and WSe2 Observed by THz Emission Spectroscopy

Jessica C. Afalla, Joselito E. Muldera, Semmi Takamizawa, Takumi Fukuda, Keiji Ueno, Masahiko Tani, and Muneaki Hase

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Abstract

Terahertz (THz) time domain emission spectroscopy was performed on bulk single crystal MoSe2 and WSe2. Results show THz emission signals which comprise of a single cycle transient current-driven signal and damped oscillatory signals arising from coherent phonon modes. The damped oscillations have frequencies below 1 THz and are attributed to interlayer shear and breathing modes.

© 2022 IEEE

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