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Tencent meeting link: https://meeting.tencent.com/dm/FdDKumxxx138 Meeting ID: 455614113 , no password
Abstract:
The concept of quasiparticles represents a significant achievement in condensed matter physics, offering a valuable framework for studying and understanding various phenomena by individually looking into the collective modes from different degrees of freedom. In recent years, there has been a growing interest in investigating the hybridization of distinct collective modes, known as chimera quasiparticles. These chimera quasiparticles exhibit hybrid properties inherited from distinct degrees of freedom, offering new opportunities for exploring exotic phases of matter and novel approaches to manipulating transport responses.
In this talk, I will discuss two recent studies focusing on magnon-chimerized quasiparticles in magnetic insulators. In the first part, I will talk about chiral phonon-like excitations from the bond-dependent magnetoelastic couplings in the absence of out-of-plane magnetization and magnetic fields. In the second part, I will present the chimerization of magnons and phonons induced by a hidden Dzyaloshinskii–Moriya interaction and will show these hybrid excitations naturally link band topology and dynamical multiferroicity.
Biography:
Bowen Ma is currently a senior research associate at HK Institute of Quantum Science & Technology. He received his Bachelor of Science degree with a major in Physics and a minor in Computer Sciences from the University of Science and Technology of China (2016) and got his Ph. D. degree at the University of Texas at Austin (2021). Later he has been working as a postdoctoral fellow and research associate at the University of Hong Kong and HKU-Shenzhen Institute of Research and Innovation. He is currently focusing on the study of quantum magnetism and its interplay with electrons, lattices, light, topology, as well as its possible application to spintronics.