报告题目：The design of topological states in realistic materials via Floquet engineering

报告时间：2022年11月2日 16:00

报告地点：腾讯线上会议（会议号：323 283 151）

报告摘要：

    Floquet engineering (i.e., periodic driving) provides a wide range of pathways to manipulate topological states, leading to emergent nonequilibrium phases that are otherwise not possible in equilibrium cases. Importantly, irradiation of circularly polarized light can dynamically break the time-reversal symmetry, and further lead to the appearance of anomalous Hall effects and even QAHE. However, the attempts of Floquet engineering studied so far have mainly focused on theoretical models; realistic materials that can realize these proposals are largely unexplored. Here, based on effective models and first-principles calculations, we share our recent work on achieving light-induced topological states (such as quantum anomalous Hall effects, higher-order topological insulators) with novel mechanisms and further towards realizing these topological states in realistic materials.

References：

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报告人简介：

    王锐，重庆大学物理学院教授，博士生导师，国家自然基金委优秀青年基金获得者（2022年），重庆市青年拔尖人才。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、教授。曾在南方科技大学作访问学者研究。长期从事计算凝聚态物理研究，通过理论建模与数值计算，并结合对称性分析、紧束缚模型等方法，围绕拓扑电子材料、拓扑声子材料的理论设计与外场调控等科学问题开展了一些研究工作，相关研究成果已经在Phys. Rev. Lett.、Phys. Rev. B、Nano Letters等期刊发表论文40余篇, 主持国家自然基金项目4项。