Engineering topological phases of 2D layered materials


  • Feng-Chuan Chuang ⋅ TW Department of Physics, National Sun Yat-sen University, Taiwan


In this presentation, we explore the fields of topological insulators (TIs) and two-dimensional materials (2D) materials, which offer promising applications in technology. We highlight the collaborative nature of experimental and theoretical approaches in accurately predicting the properties of quantum materials. Our focus centers on 2D materials with honeycomb structures which showcase the emergence of unique properties through heterojunctions formed by layer stacking. Central to our research is the investigation of TIs, unveiling surface conducting states within insulating bulk materials. We elucidate topology principles, showcasing their invariance under continuous deformations. Through theoretical calculations and experimental validation, we uncover distinctive properties and potential applications in spintronics and quantum computing. Furthermore, we explore the manipulation of topological properties through external factors like strain, substrate engineering, and material functionalization. By adjusting lattice structures and chemical compositions, we demonstrate transitions between trivial and non-trivial topological phases in various 2D materials. Our research extends beyond theory, achieving successful experimental realization of proposed materials. Collaborating with experimental groups, we validate our findings using scanning tunneling microscopy (STM) and angle-resolved photoemission spectroscopy (ARPES) techniques. In summary, our work advances understanding of topological phases and band engineering in 2D materials, promising innovations across various technological fields. By uncovering principles behind topological insulators and exploring novel material designs, we contribute to the expanding realm of quantum materials, paving the way for future breakthroughs.

About the Speaker

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

Feng-Chuan Chuang graduated from National Taiwan Normal University with a B.S. in Physics in 1997. He obtained his M.S. and Ph.D. in Condensed Matter Physics at Iowa State University in 2003 and 2005, respectively.
In 2006 he began his career at the National Sun Yat-sen University as an Assistant Professor. Prof. Chuang was given the National Sun Yat-sen University Young Scholar Award in 2010. He was promoted to associate and full professor in 2009 and 2013, respectively. He served as the chairman of Physics department from 2014/8 to 2016/7, and hosted the 2016 annual meeting of Physical Society of Taiwan. Prof. Chuang was again given the National Sun Yat-sen University Outstanding Research Award in 2016. He received the Excellent Young Scholar Research Grant of MOST in 2018. 
His research interests include condensed matter physics, computational materials physics, materials design, 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, topological insulators, and advanced 2D materials. He has developed the structural optimization and materials design algorithms for predicting and studying quantum materials. He has predicted and engineered numerous two dimensional topological materials which harbors quantum spin Hall effect and quantum anomalous Hall effect. He has collaborated closely with experimental groups to study electronic properties of advanced 2D materials and surface physics. Overall, he has published numerous papers in some of the most prestigious journals, such as Physical Review Letters, Nano Letters, Science Advances, Nature Communications, Small, and ACS Nano.



Article ID



Invited Presentations



How to Cite

F-C Chuang, Engineering topological phases of 2D layered materials, Proceedings of the Samahang Pisika ng Pilipinas 42, SPP-2024-INV-2F-01 (2024). URL: