(6月11日)胡仑辉 研究员—交错磁性:能带理论及其超越

广东省磁电物性分析与器件重点实验室学术讲座(第八十四期)

报告人:

胡仑辉 研究员 (浙江大学)

题目: 

交错磁性:能带理论及其超越

地点:

南校园550栋二楼报告厅

时间:

2026年6月11日(星期四)下午15:30

主持人:

严忠波 教授

 

报告简介:

Altermagnet is a newly discovered class of collinear antiferromagnets characterized by nonrelativistic spin-split bands, opening a new frontier in quantum materials. In this talk, I will discuss two key aspects of altermagnetism. First, I will show how altermagnetism enables novel quantum phenomena: (i) the emergence of nonrelativistic spin-orbital locking/textures governed by spin group symmetry ; and (ii) unique superconducting proximity effects: in nodal altermagnets, we find spin-singlet pairs with finite momentum , while in nodeless altermagnets, we find a spin-polarized Josephson supercurrent . I will also show the unique layer-dependent altermagnetic even-odd effect in the KV2Se2O-family altermagnetic materials , where the quasi-1D spin-split Fermi surface has been detected via the spin-selective quasi-particle interferences . Second, I will move beyond band theory to show that altermagnetic fluctuation is crucial for condensed matter theory. It completes the well-established Stoner theory of ferromagnetism , and through its fluctuations, can mediate an unconventional spin-triplet superconductor, which we call inter-orbital triplet pairing.

 

报告人简介:

胡仑辉:浙江大学百人计划研究员。他于2013年和2018年在浙江大学分别获得学士和博士学位,随后在美国加州大学圣地亚哥分校、宾夕法尼亚州立大学、田纳西大学以及芬兰阿尔托大学从事博士后研究。2023年入选国家海外高层次人才青年项目,2024年加入浙江大学。他的研究方向为凝聚态物理中新型量子现象的理论探索,特别是拓扑态、非常规超导与磁性。迄今已发表论文50篇,其中以第一作者或通讯作者身份发表Nat Phys/Nat Mater(2), PRL(4), Nat Comm/Sci Adv(5), Adv Mater(1)。