Speaker: Dr. Xiaomeng Liu, Princeton University, America

Host: Prof. Kui Jin, National Lab for Superconductivity

Time: 10:00 am, June 22nd, 2022

Abstract:

Recent developments have enabled scientists to isolate various 2D materials and assemble them into van der Waals heterostructures with elaborate stacking and alignments. These van der Waals materials, constructed layer-by-layer, host numerous novel quantum phases. However, most studies so far are done by electrical transport measurements, lacking spatial and energy resolution. Scanning tunneling microscopes (STM) can provide unique insights to these emergent quantum phases by visualizing the electron wave function in real space. Using our recent study of the graphene quantum Hall system as an example, I will demonstrate using STM techniques to identify broken symmetries, visualize electron wavefunctions, and imaging quasiparticles.

Brief CV of Dr. Xiaomeng Liu:

Dr. Xiaomeng Liu obtained his bachelor from Peking University and received his PhD in Physics from Harvard University in 2019, working with Prof. Philip Kim. After graduation, He joined Prof. Ali Yazdani's lab in Princeton as a postdoctoral fellow, where he pioneered STM studies of emergent quantum phenomena in van der Waals hetero-structures.