Optical imaging of flavor order in flat band graphene
Tian Xie
Richen Xiong
et-al
We describe an optical technique that sensitively and selectively detects flavor textures via the exciton response of a proximal transition metal dichalcogenide layer (WSe2). Through a systematic study of rhombohedral and rotationally faulted graphene bilayers and trilayers, we show that when the WSe2 is in direct contact with the graphene, the exciton response is most sensitive to the large momentum rearrangement of the Fermi surface, and thus flavor orders. The wide-field imaging capability of optical probes allows us to obtain spatial maps of flavor orders with high throughput, and with broad temperature and device compatibility.
Authors
PhD Candidate in Physics
I am an experimental physicist exploring emergent phenomena in quantum materials through light-matter interactions. I leverage spectroscopic techniques across the electromagnetic spectrum from microwave to ultrafast optical spectroscopy. My research investigates how many-body interactions give rise to novel states of matter from a dynamical perspective. I’ll be starting as an HQI Postdoctoral Fellow at Harvard University in Fall 2026.