Recent Progress in Engineering Excitonic States in 2D materials

by Dr Liguo Ma（马立国） (Zhejiang University)

Friday 24 Apr 2026, 10:00 → 11:00 Asia/Shanghai

Tsung-Dao Lee Institute/N4F-N400 - meeting room (Tsung-Dao Lee Institute)

Host: Prof. Xiaoxue Liu  

Venue: TDLI Meeting Room N400

Tencent Meeting link: https://meeting.tencent.com/dm/km9ajy3uAee1 Meeting ID: 375260244, no password

 

Abstract:

Exciton insulator (EI), a conductor for excitons but an insulator for charges, emerges in a material when its charge gap becomes smaller than the exciton binding energy. An exciton gas spontaneously forms and could host plenty exotic phases—Bosonic Superfluid, Exciton Solid, Chiral Pseudospin Liquid, etc. I will demonstrate a strongly correlated EI ground state formed in transition metal dichalcogenide (TMD) semiconductor double layers. Such kind of equilibrium excitonic system provides new opportunities for engineering quantum many-boson states in solids. Rapid developments have emerged recently in the field.

 

Biography:

Dr. Liguo Ma is currently a tenure-track assistant professor in the School of Physics of Zhejiang University since 01/2024. He obtained his PhD from Fudan University in 2019. a postdoc at Cornell University until 2023. Dr. Liguo Ma's recent research is focused on strongly correlated phenomena and quantum condensation in low-dimensional materials.