摘要 (Abstract) :Despite the rapid progress in the field of topological states, most of the topological systems studied up to now are based on crystalline materials. Recently, the study of topological states was extended to aperiodic systems, such as quasicrystals and amorphous systems. In this talk, I will first briefly review crystalline topological states and the structural characteristic o...
摘要:超快物质科学已经发展为凝聚态物理学的重要研究前沿之一。超短脉冲激光不仅为光谱学测量提供了时间分辨的维度,还将光与物质相互作用推至高度非线性的响应区间,为新奇量子物态提供了全新的研究手段。超短脉冲激光也是一种新型的物态调控工具,能够在飞秒(fs)时间尺度下驱动绝热物态相变,有助于发现新现象、新效应和新物理。本报告的第一部分将介绍自主搭建的泵浦光波长准连续可调的“泵浦-探测”宽带光谱测量系统。我...