报告题目：Thermal Hall effect in two-dimensional magnets

报  告 人：Jung Hoon Han  Sungkyunkwan University

报告时间：2024年11月1日（周五）15:00

报告地点：唐仲英楼B501

摘      要：Various Hall effects in two-dimensional materials have been a key feature revealing the topological electronic structure in both momentum and real spaces. For insulating materials, analogous phenomena can take place in the thermal transport called the thermal Hall effect (THE). In this talk I discuss theoretical aspects of THE occurring in kagome lattice materials with both ferromagnetic and antiferromagnetic exchanges ^[1,2]. Time permitting, I also discuss the novel h/6e oscillation observed in the Little-Parks experiment on a CsV₃Se₅ thin film ^[3].

参考文献：

[1] Thermal Hall effects of spins in a paramgnet, H. Y. Lee, JHH, Patrick A. Lee, Phys. Rev. B 91, 125413 (2015)

[2] Spin thermal Hall conductivity of a kagome antiferromagnet, H. Doki et al. Phys. Rev. Lett. 121, 097203 (2018)

[3] Understanding resistance oscillation in the CsV3Sb5 superconductor, JHH and Patrick A. Lee, Phys. Rev. B 106, 184515 (2022)

报告人简介：Jung Hoon Han leads the Theory of Information & Matter Group at Sungkyunkwan University in Suwon, South Korea. He earned his BSc in physics at Seoul National University, South Korea, in 1991 and his PhD in physics at the University of Washington in 1997 under David Thouless. His research focuses on understanding complex quantum behavior in real materials such as quantum Hall, high-Tc cuprates, multiferroics, chiral magnets, multi-orbital bands, spinor Bose-Einstein condensates, and quantum magnets. More recently, he has worked on developing quantum and classical models with dipole symmetry.