报告摘要：

　　Recently, a novel collinear magnetic phase known as altermagnetism has been identified, featuring zero net magnetization alongside momentum-dependent collinear spin splitting. A comprehensive understanding of the geometric and spin characteristics of altermagnetic Fermi surfaces is essential for unraveling the unique physical phenomena arising from altermagnets and for exploring their potential applications. In this talk, I will present our findings on quantum oscillations and quasiparticle interference effects in metallic altermagnets, taking into account the roles of Zeeman splitting and spin-orbit coupling. We identify several distinct transport signatures that serve as key fingerprints for characterizing altermagnetic Fermi surfaces, enabling direct comparisons with experimental observations. Furthermore, I will discuss the unique spin precession behavior arising from altermagnetic spin splitting and explore its potential for high-efficiency spin transistor applications.

报告人简介：

　　陈伟，南京大学物理学院教授，博士生导师，国家优秀青年基金获得者。2009年东南大学物理系本科，2014年南京大学物理学院博士。2014-2019年在南京航空航天大学理学院工作，先后担任讲师、副教授、教授。2017-2019年在苏黎世联邦理工大学（ETH）理论物理研究所（ITP）做访问学者和博士后。2020年起在南京大学物理学院担任教授。已发表学术论文60余篇，其中以第一/通讯作者身份发表PRL/PRX/NC论文14篇。陈伟主要从事凝聚态理论研究，近期研究兴趣包括：拓扑物质的量子输运与相变理论；凝聚态体系中的非厄米物理效应；介观电子体系中的量子干涉与量子关联效应；低功耗量子器件、自旋电子学器件物理。