Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session T21: Moire Beyond Graphene II
11:30 AM–2:18 PM,
Thursday, March 9, 2023
Room: Room 213
Sponsoring
Unit:
DCMP
Chair: Ziyan Zhu, Stanford University
Abstract: T21.00004 : Moiré phonon in graphene/hexagonal boron nitride moiré superlattice*
12:06 PM–12:18 PM
Presenter:
Lukas P. A. Krisna
(Osaka University)
Authors:
Lukas P. A. Krisna
(Osaka University)
Mikito Koshino
(Osaka University)
We also show that the moiré phonon has angular momentum due to the inversion symmetry breaking by hBN, with high amplitudes concentrated near narrow gap region. Finally, we apply the same approach to twisted bilayer graphene, and we find a notable difference between the origins of the flat-band modes in G/hBN and TBG, reflecting distinct geometric structures of domain pattern.
*This work is supported by JST SPRING, Grant Number JPMJSP2138.
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