时 间：2024.11.05 14:00 地 点：物理楼106

报告人：陈钢教授，北京大学

报告人简介：Professor Gang Chen is currently Boya Distinguished Professor of Physics atinternational center for quantum materials of Peking University. Previously, he was afull Professor at the University of Hong Kong. He received his PhD degree at Universityof California Santa Barbara in 2010. He is mainly interested in strong correlationphysics, and has made some contributions to the fields of quantum magnetism.correlated electrons, itinerant frustration, topological materials, mesoscopic physics aswell as ultracold atoms. He was awarded 2016 Daniel Tsui fellowship and 2018 Qiushioutstanding Youth Scientist.

报告简介:In this talk, I will explain the unexpected emergent physics in thetriangular lattice cobaltates. For the bilayer cobaltates, I will show that theseemingly unrelated physics of the Berezinskii-Kosterlitz-Thouless andKugel-Khomskii physics can be related and emerge through an elegantorganization of active Hilbert space. For the monolayer cobaltates, I wilshow that the spin supersolidity in the full frustrated regime leads to theunusual spin dynamics and the Dirac spin liquid provides a natural interpretation of the spin dynamics.