Manipulating topological phases in honeycomb structure

Authors

Feng-Chuan Chuang ⋅ TW Department of Physics, National Sun Yat-Sen University

Abstract

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 [1-5]. 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.

[1] F. C. Chuang, L. Z. Yao, Z. Q. Huang, Y. T. Liu, C. H. Hsu, T. Das, H. Lin, and A. Bansil, Nano Lett. 14, 2505 (2014).
[2] Z. Q. Huang, C. H. Hsu, F. C. Chuang, Y. T. Liu, H. Lin, W. S. Su, V. Ozoilns, A. Bansil, New J. of Physics, 16 (2014).
[3] Christian P. Crisostomo, Liang-Zi Yao, Zhi-Quan Huang, Chia-Hsiu Hsu, Feng-Chuan Chuang, Hsin Lin, Marvin Albao, and Arun Bansil, Nano Lett. 15, 6568 (2015).
[4] Chia-Hsiu Hsu, Zhi-Quan Huang, Christian P. Crisostomo, Liang-Zi Yao, Feng-Chuan Chuang, Yu-Tzu Liu, Baokai Wang, Chuang-Han Hsu, Chi-Cheng Lee, Hsin Lin, and Arun Bansil, Scientific Reports 6, 18993 (2016).
[5] Feng-Chuan Chuang, Chia-Hsiu Hsu, Zhi-Quan Huang, Christian P. Crisostomo, Hsin-Lei Chou, Shih-Yu Wu, Chien-Cheng Kuo, Wang-Chi V. Yeh, Hsin Lin, and Arun Bansil, Phys. Rev. B 93, 035429 (2016).

About the Speaker

Feng-Chuan Chuang, Department of Physics, National Sun Yat-Sen University

Feng-Chuan Chuang obtained his bachelor’s degree from National Taiwan Normal University in 1997. He continued his graduate studies at Iowa State University in the US and got his PhD in Condensed Matter Physics in 2005. His research interests include condensed matter physics, computational materials physics, surface science, first-principles calculation, molecular dynamics, and genetic algorithm to name a few. He has published works on atomic clusters, semiconductor and metal surfaces, graphene, topological insulators, and 2D materials. He has developed the structural predictions algorithm, genetic algorithm, to predict the atomic structures of materials. The main focus of researches is on two dimensional materials. Recently, he predicted that the IV, V, and III-V ultrathin films in honeycomblike structures as well as their derivatives could be two dimensional topological insulators. The main result was published in Nano Letters in 2014.
He started his work at the National Sun Yat-Sen University in Kaohsiung, Taiwan as an Assistant Professor in 2006. Prof. Chuang was given the National Sun Yat-Sen University Young Scholar Award in 2010. He was the chairman of Physics department from August 2014 to July 2016. Professor Chuang was given the National Sun Yat-Sen University Outstanding Research Award in 2016. Currently, he is a university distinguished professor of the Department of Physics at the National Sun Yat-Sen University and a councilor of the Physical Society of Taiwan.

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Issue

2016: Proceedings of the 34th Samahang Pisika ng Pilipinas Physics Conference

Physics at the front and center: Strengthening core values in physics research
18–21 August 2016, University of the Philippines Visayas, Iloilo City

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Article ID

SPP-2016-3A-01

Section

Invited Presentations

Published

2016-08-18

How to Cite

[1]

F-C Chuang, Manipulating topological phases in honeycomb structure, Proceedings of the Samahang Pisika ng Pilipinas 34, SPP-2016-3A-01 (2016). URL: https://proceedings.spp-online.org/article/view/SPP-2016-3A-01.