报告题目：《From antiferromagnets to altermagnets: functionalizing novel magnetic phases》
报告人：Prof. Mathias Kläui
报告时间：2024年10月21日（星期一） 10:00
报告地点：宝山校区东区7号楼510
报告人简介：
Mathias Kläui is professor of physics at Johannes Gutenberg-University Mainz and adjunct professor at the Norwegian University of Science and Technology.
He received his PhD at the University of Cambridge, after which he joined the IBM Research Labs in Zürich. He was a junior group leader at the University of Konstanz and then became associate professor in a joint appointment between the EPFL and the PSI in Switzerland before moving to Mainz. His research focuses on nanomagnetism and spin dynamics on the nanoscale in new materials. His research covers from blue sky fundamental science to applied projects with major industrial partners. He has published more than 400 articles and given more than 200 invited talks. He is a Fellow of the IEEE, IOP and APS and has been awarded a number of prizes and scholarships.
He has been one of the 2020/2021 IEEE Magnetics Society Distinguished Lecturers.
报告摘要：
While known for a long time, antiferromagnetically ordered systems have previously been considered, as “interesting but useless”. However, since antiferromagnets potentially promises faster operation, enhanced stability and higher integration densities, they could potentially become a game changer for new spintronic devices. Here we show how antiferromagnets can be used as active spintronics devices by demonstrating the key operations of “reading”, “writing”, and “transporting information” in antiferromagnets.
Going beyond antiferromagnets, we develop altermagnetic materials. This recently identified class magnets with collinear antiferromagnetic magnetic order can exhibit spin splitting and particular spin transport properties and torques. Here we demonstrate the spin splitting in RuO2 and CrSb und analyze particular symmetries of the Hall signal in the altermagnet hematite.
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