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arXiv · 1810.10747

Ultrafast hot carrier dynamics of ZrTe$_5$ from time-resolved optical reflectivity

Xiu Zhang·Hai-Ying Song·X. C. Nie·Shi-Bing Liu·Yang Wang·Cong-Ying Jiang·Shi-Zhong Zhao·Genfu Chen·Jian-Qiao Meng·Yu-Xia Duan·H. Y. Liu
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Abstract

We investigate the hot carrier dynamics of ZrTe$_5$ by ultrafast time-resolved optical reflectivity. Our results reveal a phonon-mediated across-gap recombination, consistent with its temperature-dependent gap nature as observed previously by photoemission. In addition, two distinct relaxations with a kink feature right after initial photoexcitation are well resolved, suggesting the complexity of electron thermalization process. Our findings indicate that correlated many-body effects play important role for the transient dynamics of ZrTe$_5$.

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Xiu Zhang, Hai-Ying Song, X. C. Nie, Shi-Bing Liu, Yang Wang, Cong-Ying Jiang, Shi-Zhong Zhao, Genfu Chen, Jian-Qiao Meng, Yu-Xia Duan, H. Y. Liu. 2018-10-25. Ultrafast hot carrier dynamics of ZrTe$_5$ from time-resolved optical reflectivity. https://doi.org/10.1103/physrevb.99.125141

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