Ultrafast photo-induced melting of the trimer superstructure in TaTe2

K. M. Siddiqui,D. B. Durham,F. Cropp,S. Rajpurohit,C. Ophus,Y. Zhu, J. D. Carlström, C. Stavrakas, Z. Mao,A. Raja, P. Musumeci,L. Z. Tan,A. M. Minor,D. Filippetto,R. A. Kaindl

2021 Conference on Lasers and Electro-Optics (CLEO)（2021）

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摘要

We report the first ultrafast study of TaTe 2 , utilizing MeV-scale ultrafast electron diffraction to reveal rapid photo-induced melting of its low-temperature trimer super-structure. Density-functional calculations indicate intra-trimer charge transfer as a trigger of this transformation.

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关键词

trimer superstructure,MeV-scale ultrafast electron diffraction,low-temperature trimer super-structure,density functional calculations,ultrafast photo-induced melting,intratrimer charge transfer,TaTe2

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