Year: 2025
Type: article
Abstract: The authors propose here a projection scheme to simplify electron-phonon coupling in magic-angle twisted bilayer graphene, highlighting the coupling with low-energy heavy electrons. Several active moir\'e phonons that strongly couple to the flat band are identified. These modes exhibit unique envelope functions at the moir\'e scale and preserve monolayer oscillations at the atomic scale. Further incorporating them into an extended Holstein model will facilitate studies of correlated insulating and superconducting phases.
Authors: Hao Shi, Wangqian Miao, Xi Dai
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4409503723