Weiyao Zhao, Monash
The 3D topological insulator is material with insulating bulk and conducting surface states with Dirac dispersion. Therefore, the 3DTI is an ideal system to study the 2D Dirac fermion’s transport behavior.
In a bulk-insulating 3DTI Hall-bar device, we observed strong oscillation patterns on its magnetoconductivity curves at low temperatures, which shows quasi periodicity with magnetic fields. Such oscillations may contributed by the interaction between surface states and the bulk charge puddles.
About the presenter
Weiyao Zhao is a research fellow at Monash University, working with CI Julie Karel and Prof Xiaolin Wang under Enabling technology A: atomically-thin materials and Research theme 1. Weiyao studies single-crystal growth of topological materials, via optical floating zone, slow cooling, and chemical vapor transport methods. His current focus is fabrication of high-quality topological insulator single crystals, as well as analysis of the crystal structure. Other areas of research include the transport properties of magnetic-doped topological insulators, and semimetals.