Wednesday, May 15
2:00 pm ET/11:00 am PT
Nanoscale electrodynamics offers a unique perspective on states with bulk-edge correspondence or spatially dependent excitations. I will first discuss the observation of opto-twistronic Hall effect in a three-dimensional transition metal dichalcogenide (TMD) spiral lattice. Then, I will introduce our latest advancements in optically coupled microwave impedance microscopy, a technique that enhances our capability to explore electrodynamics at the nanometer scale. I will discuss our recent studies utilizing this technology to extract spectroscopic information on exciton excitations within TMD systems. Additionally, I will share some of our recent findings on probing topological and correlated electronic states, specifically the fractional Chern insulator states in twisted TMD bilayers.
[1] Opto-twistronic Hall effect in a three-dimensional spiral lattice, Z. Ji et al., arXiv:2312.10954
[2] Harnessing excitons at the nanoscale--photoelectrical platform for quantitative sensing and imaging, Z. Ji et al., arXiv:2311.04211
[3] Local probe of bulk and edge states in a fractional Chern insulator, Z. Ji*, H. Park* et al., arXiv:2404.07157
Zhurun Ji is a Stanford science fellow and Urbanek-Chodorow postdoctoral fellow at Stanford University, working in Zhixun Shen’s group. She got her bachelor’s degree from USTC in 2015, doctorate in physics from University of Pennsylvania in 2021. Her current research focuses on developing scanning probe techniques in the microwave regime to study quantum materials.