题 目：Electric manipulation of spin and Hall transport in 2D magnetic materials
报告人：崔朝喜 博士 北京理工大学
时 间：2025年12月29日(星期一)上午10:30
地 点：虎溪校区理科楼物理学院LE201
邀请人：马大帅
报告摘要：In both fundamental research and technological applications, electric fields arerecognized as one of the simplest and most effective means of manipulation. However, because an electric field does not break time-reversal symmetry, time-reversal-odd phenomena remain relatively underexplored. In this talk, I will present unique mechanisms for electric-field manipulation of spins and Hall transport in 2D materials. We find that the 2D altermagnets with valley-mediated spin-layer coupling enables an electric field to generate an almost uniform effective magnetic field, thereby allowing efficient control of spin polarization. In addition, I will introduce the electric Hall effect (EHE) and the quantum electric Hall effect (QEHE) in two-dimensional magnetic systems, where a transverse current is induced by an electric gate field rather than by a magnetic field,which serves as a disruptive and attractive mechanism for electric field detection.
崔朝喜博士，2025 年博士毕业于北京理工大学，导师为姚裕贵教授、余智明教授。目前，在北京理工大学继续进行博士后研究工作。主要研究方向为基于对称性的拓扑物态和新奇物性。迄今，以第一作者、共同第一作者以及通讯作者发表SCI 论文10篇，包括 3篇 PRL、1篇 Nat.Commun和6篇PRB。