【直播】【江苏省青年物理学家论坛】建立拓扑材料库以后

报告名称：

建立拓扑材料库以后

报告时间：

2023年5月9日 12:00

报告嘉宾：

唐峰 教授  南京大学物理学院

主办单位：

江苏省物理学会

直播通道

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报告人介绍

唐峰 

南京大学物理学院助理教授

Feng Tang, born in Yancheng, Jiangsu, assistant professor in school of physics at Nanjing University, obtained Ph.D in Sep. 2019 in Nanjing University and is doing research in condensed matter theoretical physics. From Sep. 2019 to Mar. 2023, he worked as a special researcher in Nanjing University. In Mar. 2023, He was promoted to assistant professor. His Doctoral thesis was awarded as one of the outstanding Doctoral theses in Jiangsu. He was selected to participate in the 6th Young Elite Scientists Sponsorship Program by China Association for Science and Technology. Up to now, he has published more than 20 scientific papers (including one paper published in Nature, Nature Physics, Science Advances and Phys. Rev. Lett. as the first author).

报告简介

In 2019, the topological materials databases constructed by combining symmetry-indicators/topological quantum chemistry and high-throughput first-principles calculations, not only revealed ubiquitous band topology in nature, but also showcased the significance of symmetry (e.g. in the framework of space groups and their representations) in condensed matter physics. After that, to perform large-scale searches for topological states in magnetic/superconducting materials has persisted to be hot and challenging topics. Notably, for magnetic/superconducting materials, reliably predicting magnetic structures and superconducting pairings theoretically is itself a very difficult problem but vital in diagnosing topology in these systems. Besides, for nonmagnetic/magnetic/superconducting materials, numerous band nodes deserve to be systematically studied to unearth new type of massless excitations. In this talk, I will introduce works done in the past four years following the above ambitions: 1. The construction of irreducible representations for the 1651 magnetic space groups, proposal of exhaustively constructing  effective models and complete classification of all band nodes; 2. Building comprehensive mappings from superconducting pairings for all irreducible representations of point groups to the nodal/topological superconducting properties; 3. High-throughput topological classification of 1267 magnetic materials emphasizing the evolution of topological states by symmetry-breaking. Lastly, I will talk about problems that might be worthy of further explorations.  

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编辑：吴良秀

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