Seminar by Professor Xiang LI (University of Toronto)

Name: Seminar by Professor Xiang LI (University of Toronto)
Start: 2025-12-15T15:00:00+08:00
End: 2025-12-15T16:00:00+08:00
Location: Rm G25, Science Centre North Block, The Chinese University of Hong Kong

Schedule

Mon Dec 15 2025 at 03:00 pm to 04:00 pm

UTC+08:00

Location

Rm G25, Science Centre North Block, The Chinese University of Hong Kong | Hong Kong, HK

High pressure provides a powerful and clean means of tuning the interactions that govern quantum materials, often revealing phases inaccessible at ambient conditions. By compressing a system, we can modify lattice geometry, electronic bandwidth, and competing orders, allowing us to disentangle the interplay among spin, orbital, and lattice degrees of freedom. Although optical studies in these extreme environments must contend with stringent experimental constraints, they offer unique access to the evolution of excitations and symmetry changes across a wide range of materials. In this talk, I will discuss how we employ complementary optical techniques to probe the quantum physics of the strongly spin orbit coupled Mott insulator and Weyl semimetal under extreme conditions. Taken together, these experiments open new windows into quantum materials by providing multiple probes for accessing and studying novel phases.