报告题目：Floquet engineering topological states from effective models towards realistic materials

报 告 人：王锐 重庆大学物理学院

报告时间：2024年10月15日(周二） 10：30  

报告地点：理科楼C302

内容摘要：With significant advances in classifying and cataloguing topological matter, the focus of topological physics has shifted towards quantum control, particularly the creation and manipulation of topological phases of matter. Floquet engineering, the concept of tailoring a system by periodic fields, offers a powerful tool to manipulate electronic properties of condensed systems, and even to create exotic non-equilibrium topological states that are impossibly present in equilibrium scenarios. Here, we will give our several works in theoretical investigations of Floquet engineering topological states from effective models towards realistic materials. We show that light irradiation can realize various desired topological states through the introduction of symmetry breaking, such as quantum anomalous Hall effects with tunable Chern numbers, bicircular light induced gyrotropic magnetic effect, and Floquet chiral topological superconductivity, as well as beyond. Moreover, based on first-principles calculations and Floquet theorem, we show several realistic material candidates proposed as potential hosts for promising Floquet topological states, facilitating their verification in experiments.

报告人简介：王锐，重庆大学物理学院/量子材料与器件研究中心教授、物理学院副院长。2003年至2012年在重庆大学学习，获得学士、硕士、博士学位。2012年博士毕业留校任教，历任讲师、副教授，2020年评为教授。近年来，主要从事计算与理论凝聚态物理研究，围绕拓扑物态与拓扑材料的理论设计、周期光场驱动下拓扑物态的量子调控等问题开展了一系列研究，相关研究成果以第一作者或通讯作者在Physical Review Letters，Nature Communications，Nano Letters，Physical Review B等期刊发表论文60余篇，获得国家自然科学基金委优秀青年基金项目、重庆杰出青年基金项目等资助，重庆市研究生导师团队负责人，中国物理学会科普工作委员会委员。