Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session S09: Topology in Twisted Multilayer Graphene
8:00 AM–11:00 AM,
Thursday, March 7, 2024
Room: L100J
Sponsoring
Unit:
DCMP
Chair: Enrique Munoz, Pontificia Universidad Catolica de Chile
Abstract: S09.00008 : Field-stabilized Chern insulator and possible nematicity in magic-angle Helical trilayer graphene
9:24 AM–9:36 AM
Presenter:
Aaron L Sharpe
(Stanford University)
Authors:
Aaron L Sharpe
(Stanford University)
Liqiao Xia
(Massachusetts Institute of Technology)
Aviram Uri
(Massachusetts Institute of Technology)
Sergio C de la Barrera
(Massachusetts Institute of Technology MI)
Yves Hon H Kwan
(Princeton University)
Rupini Kamat
(Stanford University)
Ziyan Zhu
(Stanford University)
Julian May-Mann
(Stanford)
Kenji Watanabe
(National Institute for Materials Science)
Takashi Taniguchi
(Kyoto Univ)
Marc Kastner
(Stanford Univ)
David Goldhaber-Gordon
(Stanford University)
Liang Fu
(Massachusetts Institute of Technology MI)
Trithep Devakul
(Stanford University)
Pablo Jarillo-Herrero
(Massachusetts Institute of Technology MIT)
Here, we will explore new physics in HTG that arise in finite fields. First, we discuss a special scenario where the network of gapless edge states is no longer topologically protected, leading to the apparent formation of a robustly quantized field-induced Chern insulator. Second, we discuss evidence of possible nematic order at specific integer filling states. These additional findings further highlight HTG as a platform for exploring both strongly correlated and topological phases.
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