Bulletin of the American Physical Society
2023 APS March Meeting
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session N29: Strongly Correlated Systems, Including Quantum Fluids and Solids XI
11:30 AM–2:30 PM,
Wednesday, March 8, 2023
Room: Room 221
Sponsoring
Unit:
DCMP
Chair: Omar Chmaissem, Northern Illinois University and Argonne National Laboratory
Abstract: N29.00013 : Local order parameters and moire translation symmetry breaking of twisted bilayer graphene from local density of states*
1:54 PM–2:06 PM
Author not Attending
Presenter:
Tomohiro Soejima
(University of California, Berkeley)
Authors:
Tomohiro Soejima
(University of California, Berkeley)
Kevin P Nuckolls
(Princeton University)
Jung Pyo Hong
(Princeton University)
Myungchul Oh
(Princeton University)
Michael P Zaletel
(UC Berkeley)
Ryan L Lee
(Princeton University)
Dillon Wong
(Princeton University)
Collaboration:
N/A
In addition to local symmetry breaking, our method can identify symmetry breaking at moire scale. We show knowing the location of graphene lattice sites allows us to characterize whether a given state has moire periodic features or not. We apply this analysis method to the nontrivial example of incommensurate Kekule spiral (IKS), a theoretical candidate state with a special kind of translation breaking, and show that it leaves unambiguous features in LDOS.
*This work was partly supported by the Gordon and Betty Moore Foundation’s EPiQS initiative grants GBMF9469 and DOE-BES grant DE-FG02-07ER4641.
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