Chiral phonons of honeycomb-type bilayer Wigner crystals
Mesoscale and Nanoscale Physics
2025-01-03 v2 Strongly Correlated Electrons
Abstract
We theoretically investigated the chiral phonons of honeycomb-type bilayer Wigner crystals recently discovered in van der Waals structures of layered transition metal dichalcogenides. These chiral phonons can emerge under the inversion symmetry breaking introduced by an effective mass imbalance between the two layers or a moir\'e potential in one layer, as well as under the time-reversal symmetry breaking realized by applying a magnetic field. Considering the wide tunability of layered materials, the frequencies and chirality values of phonons can both be tuned by varying the system parameters. These findings suggest that bilayer honeycomb-type Wigner crystals can serve as an exciting new platform for studying chiral phonons.
Keywords
Cite
@article{arxiv.2411.01760,
title = {Chiral phonons of honeycomb-type bilayer Wigner crystals},
author = {Dingrui Yang and Lingyi Li and Na Zhang and Hongyi Yu},
journal= {arXiv preprint arXiv:2411.01760},
year = {2025}
}