SEMINAR
The State Key Lab of High Performance Ceramics and Superfine Microstructure,
Shanghai Institute of Ceramics, Chinese Academy of Sciences
中 国 科 学 院 上 海 硅 酸 盐 研 究 所 高 性 能 陶 瓷 和 超 微 结 构 国 家 重 点 实 验 室
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衬底支撑低维量子材料的理论设计与调控
周 苗 教授
北京航空航天大学
时间:2023年11月11日(星期六)上午 11:20
地点:嘉定园区 G 楼 3 楼一会议室
欢迎广大科研人员和研究生参与讨论!
联系人:孙宜阳 ( 15618031025)
报告摘要:
Recent progress of orbital physics, utilizing the orbital degree of freedom in addition to the charge and spin of electrons, opens up new opportunities to realize richer extraordinary properties. In this presentation, we will present our recent progress on the theoretical design and understanding of low-dimensional topological quantum materials based on lattice structure and orbital composition. In particular, by tight-binding modeling with first-principles calculations, we demonstrate the electronic structures and topological properties of 1D atomic nanolines and 2D triangular lattices with multi-orbitals. The topological phase diagrams are mapped out, and possible topological phase transitions initiated by substrate are predicted. Real material systems are proposed, which fully capture the salient features of tight-binding parameter space, and can be experimentally prepared and characterized by MBE, STM/STS and ARPES.
主讲人简介:
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