Magic-angle helical trilayer graphene
Name
sciadv.adi6063.pdf
Size
1.07 MB
Format
Adobe PDF
Checksum (MD5)
8fcf0eeed4247b98851f9ff227c4087b
Author(s)
Devakul, Trithep
Ledwith, Patrick J.
Xia, Li-Qiao
Uri, Aviram
de la Barrera, Sergio C.
Jarillo-Herrero, Pablo
Fu, Liang
Date Issued
September 8, 2023
Publisher
American Association for the Advancement of Science
Citation
Trithep Devakul et al. ,Magic-angle helical trilayer graphene.Sci. Adv.9,eadi6063(2023).
Version
Final published version
Abstract
We propose magic-angle helical trilayer graphene (HTG), a helical structure featuring identical rotation angles between three consecutive layers of graphene, as a unique and experimentally accessible platform for realizing exotic correlated topological states of matter. While nominally forming a supermoiré (or moiré-of-moiré) structure, we show that HTG locally relaxes into large regions of a periodic single-moiré structure realizing flat topological bands carrying nontrivial valley Chern number. These bands feature near-ideal quantum geometry and are isolated from remote bands by a very large energy gap, making HTG a promising platform for experimental realization of correlated topological states such as integer and fractional quantum anomalous Hall states.
Subjects
Multidisciplinary
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution-Noncommercial
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1126/sciadv.adi6063
