Hidden order and hidden dynamics in quantum magnets

by Prof. Gang Chen (Peking University)

Thursday 5 Dec 2024, 14:30 → 16:30 Asia/Shanghai

TDLI Meeting Room N600 (East Wing of Floor 6, North Building)

Abstract

In this talk, I will explain the hidden order and associated Berezinskii-Kosterlitz-Thouless physics in the spin-1 kagome lattice antiferromagnet. For the monolayer cobaltates, I will show that the spin supersolidity in the full frustrated regime leads to the unusual spin dynamics and the Dirac spin liquid provides a natural interpretation of the spin dynamics.

 

References:

[1] arXiv:2409.18600 Nematic correlations and nematic Berezinskii-Kosterlitz-Thouless transition in spin-1 kagomé lattice antiferromagnets

Chun-Jiong Huang, Xu-Ping Yao, Gang Chen

[2] Phys. Rev. Research 6, 033031 (2024) Quantum Spin Supersolid as a precursory Dirac Spin Liquid in a Triangular Lattice Antiferromagnet

Haichen Jia, Bowen Ma, Zidan Wang, Gang Chen

Biography

Professor Gang Chen is currently Boya Distinguished Professor of Physics at international center for quantum materials of Peking University. Previously, he was a full Professor at the University of Hong Kong. He received his PhD degree at University of California Santa Barbara in 2010. He is mainly interested in strongly correlation physics, and has made some contributions to the fields of quantum magnetism, correlated electrons, itinerant frustration, topological materials, mesoscopic physics as well as ultracold atoms. He was awarded 2017 Daniel Tsui fellowship and 2018 Qiushi outstanding youth scientist.

Division

Condensed Matter

Other information

Tencent Meeting link: https://meeting.tencent.com/dm/7WuY1NPUVHbq Meeting ID: 990 233 909, no password