Ultrafast photothermoelectric effect in Dirac semimetallic Cd3As2 revealed by terahertz emission

  title={Ultrafast photothermoelectric effect in Dirac semimetallic Cd3As2 revealed by terahertz emission},
  author={W. Lu and Zi-Pu Fan and Yunkun Yang and Junchao Ma and Jiawei Lai and Xiaomin Song and Xiao Zhuo and Zhaoran Xu and Jing Liu and Xiaodong Hu and Shuyun Zhou and Faxian Xiu and Jinluo Cheng and Dong Sun},
  journal={Nature Communications},
  • W. LuZi-Pu Fan Dong Sun
  • Published 24 February 2022
  • Materials Science, Physics
  • Nature Communications
The thermoelectric effects of topological semimetals have attracted tremendous research interest because many topological semimetals are excellent thermoelectric materials and thermoelectricity serves as one of their most important potential applications. In this work, we reveal the transient photothermoelectric response of Dirac semimetallic Cd3As2, namely the photo-Seebeck effect and photo-Nernst effect, by studying the terahertz (THz) emission from the transient photocurrent induced by these… 

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