2026/09/08(Tue) 14:00 -16:00 一樓演講廳 1F, Auditorium
Title
Electronic Structure of Topological Materials
Speaker
張泰榕特聘教授 (國立成功大學物理系) Prof. Tay-Rong Chang (Department of Physics, National Cheng Kung University)Abstract
Phase transitions are traditionally understood within Landau's framework of spontaneous symmetry breaking. The discovery of topological phases, however, has established a new paradigm in which quantum states are classified by the topology of their electronic wave functions. In this colloquium, I will introduce the basic concepts of topological band theory and discuss how first-principles calculations have guided the discovery of nonmagnetic and magnetic topological insulators. If time permits, I will conclude by presenting our recent work on orbital topology, highlighting a new topological perspective on the orbital Hall effect.
Language
演講語言 (Language): in English