报告人：Kesong YANG 教授

University of California San Diego

时间：2026年6月15日（周一），下午15：00

地点：知新楼7楼量子报告厅

摘要：Chiral helimagnets have attracted increasing attention because of their unique spin textures, rich magnetic dynamics, and potential applications in next-generation spintronic devices. Accurately predicting helimagnetic properties from first-principles calculations remains challenging due to the complexity of noncollinear spin configurations and the exceptionally long magnetic periods, often extending to tens of nanometers. In this talk, I will present a first-principles framework for modeling and predicting monoaxial helimagnetic spin structures. Using Cr-intercalated transition-metal dichalcogenides as representative examples, I will demonstrate how key helimagnetic parameters, including the helical wavevector, magnetic period, and critical magnetic field, can be obtained from first-principles calculations. I will further discuss how this framework helps address several longstanding questions regarding helimagnetic spin structures and magnetic interactions.

报告人简介：Dr. Kesong Yang is a Full Professor in the Department of Chemical and Nano Engineering at the University of California San Diego (UC San Diego). He received his Ph.D. in Atomic and Molecular Physics from Shandong University, China, in 2010. Prior to joining UC San Diego in 2013, he was a Postdoctoral Researcher at Duke University. His research interests include computational materials science, first-principles modeling, high-throughput materials discovery, and design of functional materials.

邀请人：戴瑛