"When Chirality Meets Topology in Materials" by Nanyang Assistant Professor Chang Guoqing | IAS Discovery Science Seminar

About the talk

Chirality holds a key role across the entire spectrum of natural sciences, including Biology, Chemistry, and Physics. In this talk, we will delve into the captivating world of chiral crystals within materials science, unveiling their unique quantum phenomena they exhibit.

We will first illustrate the universal topological quantum properties of chiral crystals. Specifically, we will show that in the momentum space of chiral crystals with well-defined handedness, all point-like degeneracies in the electronic structure are characterised by quantised Chern numbers, analogous to magnetic monopoles. We will spotlight the RhSi family of crystals, showcasing their extraordinary quantum behaviors and effects and serving as a prime example of the wonders of chiral materials. To wrap up, we'll explore these materials' complex and captivating relationship between chirality and strong electronic correlation.

Our Distinguished Speaker

Dr Chang Guoqing earned his Ph.D. from the National University of Singapore in 2017. Later, he worked as a Research Fellow at Princeton University. In 2020, Dr Chang joined Nanyang Technological University as Nanyang Assistant Professor. Recognised for his groundbreaking contributions to physics, Dr Chang has consistently been named among the world's most highly cited researchers since 2019.

His exceptional work was further acknowledged in 2023 when he received the prestigious Singapore Young Scientist Award and was listed among the MIT Technology Review's Innovators Under 35 for the Asia Pacific region.

Co-Organisers

IAS@NTU and the Graduate Students' Clubs of EEE, MSE and SPMS.