Mirror-symmetry-induced pseudospin filtering of phonons in graphene nanoribbons

• Published in: New journal of physics Vol. 26; no. 10; pp. 103035 - 103045
• Main Authors: Chen, Xiaobin, Cui, Shiyu, Hu, Yizhi, Yan, Kun
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.10.2024
• Subjects: Degrees of freedom; Electron spin; Electrons; Filtration; Graphene; Heat conductivity; Heterojunctions; mirror symmetry; Nanoribbons; Parity; Phonons; pseudospin; Symmetry

Unlike electrons, phonons do not have the charge and spin degrees of freedom. Consequently, it is a big challenge for the control of phonon currents and the design of quantum phonon devices due to the lack of versatile degrees of freedom. In this work, we show that phonon bands of mirror-symmetric m...