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Ultrafast laser-induced new phenomena in phase transition materials

Date: 2022-01-10
Time: 14:00
Venue: M253
Speaker: 施训 教授

北京理工大学 

报告摘要:

Femtosecond laser excitation can induce novel states of matter that are otherwise inaccessible, enabling the exploration of new behaviors as well as the underlying strongly-coupled physics. In this talk, I will describe the basic ideas of driving materials far from equilibrium, and the methods to capture such ultrafast dynamics. I will then present how we have used time-resolved ARPES to uncover new phenomena in magnetic and charge density wave materials, such as the critical behavior within 20 fs that governs the ultrafast magnetic transition in Ni, the coherent electron-lattice modulation, mode-selective electron-phonon coupling and the resulting hidden phases in 1T-TaSe2.

报告人简介:

施训,现为北京理工大学物理学院准聘教授。2010年本科毕业于武汉大学,2017年博士毕业于中国科学院物理研究所,随后在科罗拉多大学博尔德分校JILA研究所从事博士后研究,于2021年加入北京理工大学。其主要利用常规和超快角分辨光电子能谱开展量子材料的电子结构及超快动力学研究,在铁基高温超导、相变材料的激光调控等方面取得了一系列成果。

邀请人:钱天

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