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Manipulating Topological Phases in Honeycomb Structure
公告日期:2018-04-17         公告單位:物理學系

 Colloquium

Department of Physics, NCU

Manipulating Topological Phases in Honeycomb Structure

Speaker
Prof. Feng-Chuan Chuang (莊豐權)
Department of Physics, NSYSU (中山大學物理系)

Date 2018.04.24 (Tue)
Time 14:00-16:00
Place S4-625

Band topology of strained buckled honeycomb consisting of different elements (IV, V and III-V) as well as those placed on a variety of semiconducting and insulating substrates are systematically investigated using first-principles calculations [1-6]. Topological phase can be manipulated not only through strain but also through bonding with the supporting substrate and functionalization. The honeycomb can exhibit quantum spin Hall effect phase, topological crystalline phase, and quantum anomalous Hall effect phase. In addition, some metal induced reconstructed substrates can be 2D topological insulator. This opens up new opportunities for the scientists in the field of surface science.

最近更新:2018-04-17         
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