报告题目:Magnetic Analog of Cooper Pair Condensation
主 讲人:汪臻涛 浙江大学 研究员
时 间:2023年05月10日15:00
地 点:安徽大学磬苑校区理工E楼E400
主办单位:物理与光电工程学院
欢迎各位老师、同学届时前往!
报告摘要:
Interactions of collective excitations often lead to rich emergent phenomena in many-particle quantum systems. In ordered magnets, the elementary excitations are the spin waves (magnons), which obey Bose-Einstein statistics. Similar to the Cooper pairs in superconductors, the magnons can be paired into bound states under attractive interactions. Even more interestingly, the magnetic field acts as a chemical potential term that is able to tune such boson pair through a quantum critical point (QCP), beyond which a ``hidden order'' is predicted to exist. By solving the multi-magnon bound states exactly on triangular lattice, we demonstrate that this exotic phenomenon is finally realized in certain quantum magnetic materials.
报告人简介:
汪臻涛研究员目前任职于浙江大学,从事理论凝聚态研究。2010年获得中国科技大学学士学位,2016年获得莱斯大学物理学博士学位。2016-2020年、2020-2022年分别在田纳西大学和明尼苏达大学从事博士后研究。2022年加入浙江大学,主要研究兴趣是强关联电子系统中的涌现现象,包括量子和经典磁体、自旋液体、分数和拓扑激发以及拓扑纹晶体。研究既强调量子现象的理论预测,又与量子材料的实验密切合作。




