Title: First-principles calculations for Dzyaloshinskii-Moriya interaction and its application for the DMI-torque switching of perpendicular magnetization

Speaker: Hongxin Yang (Nanjing University)

Time&Location: 12:00 pm, Mar. 7,  Room B501, Tangzhongying Building 

Abstract: Understanding the magnetic interactions is of fundamental importance in condensed matter physics as well as in the application of spintronic devices. In the past 14 years, the Dzyaloshinskii-Moriya interaction (DMI) has attracted increasing attention. Here, Iwill present a systemic survey of the first-principles calculation methods for DMI [Nat. Rev. Phys. 5, 43 (2023);PRL. 115, 267210 (2015)], along with an overview of the first-principles calculations of the DMI properties of typical material systems [Nat. Mater. 17, 605 (2018); PRL 128, 167202 (2022);Nano Lett. 22, 10128 (2022)] and the DMI-induced magnetic phenomena, e.g. skyrmions-based logic gates [Natl. Sci. Rev. 9, nwac021 (2022], DMI-torque switching of perpendicular magnetization [PRL 130, 056701 (2023)].

Biography:  Hongxin Yang, professor at School of Physics in Nanjing University. He is a theoretical physicist in the field of first-principles calculations and micromagnetic simulations for spintronics, aiming for MRAM and Skyrmion applications. His recent interests are focusing on the study of perpendicular magnetic anisotropy, Dzyaloshinskii-Moriya interaction, DMI-torque switching of magnetization etc. The first-principles calculation DMI method using spin-spiral calculation in real space method they developed has been now the most commonly used one. He has published more than 100 papers, including 23 ones in Nat. Rev. Phys., Nat. Mater. Nat. Nanotech., PRL, Nat. Commun., Adv. Mater. and Nano Lett. He gave many invited talks including APS March Meeting and InterMag etc. He also contributed as session chairs in APS March Meeting and MMM  conference, etc. He is IEEE senior member since 2022.