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arXiv · 2311.14673

Pump-induced terahertz conductivity response and peculiar bound state in Mn3Si2Te6

Qiong Wu·Qiangwei Yin·Sijie Zhang·Tianchen Hu·Dong Wu·Li Yue·Bohan Li·Shuxiang Xu·Rongsheng Li·Qiaomei Liu·Hechang Lei·Tao Dong·Nanlin Wang
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Abstract

We report the significant enhancement on ultrafast terahertz optical conductivity and the unexpected formation of a polaronic-like state in semiconductor Mn3Si2Te6 at room temperature. With the absorption of pump photons, the low-frequency terahertz photoconductivity spectrum exhibits a significant rise, quickly forming a broad peak and subsequently shifting to higher energy. The short-lived nature of the broad peak, as well as the distribution of optical constants, strongly points towards a transient polaron mechanism. Our study not only provides profound insights into the remarkable photoelectric response of Mn3Si2Te6 but also highlights its significant potential for future photoelectric applications.

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Qiong Wu, Qiangwei Yin, Sijie Zhang, Tianchen Hu, Dong Wu, Li Yue, Bohan Li, Shuxiang Xu, Rongsheng Li, Qiaomei Liu, Hechang Lei, Tao Dong, Nanlin Wang. 2023-10-25. Pump-induced terahertz conductivity response and peculiar bound state in Mn3Si2Te6. https://doi.org/10.1002/adom.202301863

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