Department of Physics, TU Dortmund University

报告摘要：

In the talk I will present an overview of our recent experimental studies of nonlinear terahertz dynamics in several representative classes of solid-state materials, including Dirac semimetal, semiconductor, and strongly correlated metal. By using time-resolved ultrafast terahertz high-harmonic generation spectroscopy, we are able to reveal characteristic nonequilibrium nonlinear dynamics of Dirac/Weyl fermions [1,2,3], may-body excitonic states [4], and quantum critical metal [5] at the terahertz frequencies. I will show that the ultrafast terahertz high-harmonic generation spectroscopy is very powerful for the investigation of the complex dynamic behaviors of Dirac/Weyl fermions, many-body excitons, or strongly correlated electrons, and present our understanding of the physics responsible for the very intriguing nonlinear phenomena.

[1] S. Kovalev et al, Nat. Commun. 11, 2451 (2020).

[2] Siyu Duan et al, arXiv:2510.01760 (2025).

[3] P. Pilch et al, arXiv:2508.16166 (2025).

[4] C. Zhu et al, Phys. Rev. Lett. 134, 196503 (2025).

[5] C. Reinhoffer et al, Phys. Rev. Lett. 132, 196501 (2024).

报告人简介：

Professor Zhe Wang studied physics in Nanjing University, and obtained his master and PhD degrees from the University of Augsburg in Germany. Before he joined TU Dortmund University as a full professor in 2020, he was a junior group leader at the University of Cologne from 2019 to 2020 and a postdoctoral fellow in the Helmholtz-Center Dresden-Rossendorf from 2017 to 2019. His recent research focuses on terahertz dynamics of quantum materials, particularly in quantum magnets, Dirac matter and superconductors.

会议室：M楼253会议室

邀请人：王亚娴  副研究员

联系人：王立芬  副研究员（9963）