凝聚态物理
声子
手性(物理)
自旋(空气动力学)
物理
磁铁
激子
量子
轨道(动力学)
量子力学
费米子
工程类
航空航天工程
Nambu–Jona Lasinio模型
手征异常
热力学
作者
David Lujan,Jeongheon Choe,Swati Chaudhary,Gaihua Ye,Cynthia Nnokwe,Martin Rodriguez-Vega,Jiaming He,Frank Y. Gao,T. Nathan Nunley,Edoardo Baldini,Jianshi Zhou,Gregory A. Fiete,Rui He,Xiaoqin Li
标识
DOI:10.1073/pnas.2304360121
摘要
The interplay of charge, spin, lattice, and orbital degrees of freedom in correlated materials often leads to rich and exotic properties. Recent studies have brought new perspectives to bosonic collective excitations in correlated materials. For example, inelastic neutron scattering experiments revealed non-trivial band topology for magnons and spin–orbit excitons (SOEs) in a quantum magnet CoTiO 3 (CTO). Here, we report phonon properties resulting from a combination of strong spin–orbit coupling, large crystal field splitting, and trigonal distortion in CTO. Specifically, the interaction between SOEs and phonons endows chirality to two E g phonon modes and leads to large phonon magnetic moments observed in magneto-Raman spectra. The remarkably strong magneto-phononic effect originates from the hybridization of SOEs and phonons due to their close energy proximity. While chiral phonons have been associated with electronic topology in some materials, our work suggests opportunities may arise by exploring chiral phonons coupled to topological bosons.
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