Photo-Induced Tellurium Segregation in MoTe2

Takumi Fukuda, Ryota Kaburauchi, Yuta Saito, Kotaro Makino, Paul Fons, Keiji Ueno, Muneaki Hase

研究成果: Article査読

10 被引用数 (Scopus)


Herein, coherent phonon spectroscopy of polymorphic (Formula presented.) single crystals using a femtosecond-pulsed laser is used to investigate the relationship between structural phase transitions and photo-thermal effects induced by high-density laser excitation. Even when a femtosecond-pulsed laser is used, which generally induces fewer heat accumulation effects than the case for a continuous-wave (CW) laser, tellurium segregation is observed in coherent phonon spectra with increasing excitation density, while no structural phase transition among the polymorphs of (Formula presented.) is observed. The use of higher photon-energy excitation, however, is found to suppress tellurium segregation.

ジャーナルPhysica Status Solidi - Rapid Research Letters
出版ステータスPublished - 2022 9月

ASJC Scopus subject areas

  • 材料科学一般
  • 凝縮系物理学


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