Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session N08: Multilayered Quantum Matter
11:30 AM–2:06 PM,
Wednesday, March 6, 2024
Room: L100I
Sponsoring
Unit:
DCMP
Chair: Mario Amado, Univ de Salamanca
Abstract: N08.00011 : Proximate phases and phase transitions of quantum hall states in Moire systems*
1:30 PM–1:42 PM
Presenter:
Xueyang Song
(Massachusetts Institute of Technology)
Authors:
Xueyang Song
(Massachusetts Institute of Technology)
T. Senthil
(MIT)
Ya-Hui Zhang
(Johns Hopkins)
Cenke Xu
(University of California, Santa Barbara)
Liang Fu
(Massachusetts Institute of Technology MI)
Chao-Ming Jian
(Cornell University)
We explore proximate phases including the charge density wave (CDW) orders, Fermi liquids and topological ordered states. At filling -2/3, a quantum Ginzburg-Landau critical theory, as well as quantum electrodynamics(QED), are proposed to describe various FQAH-CDW transitions and the competition of CDW order and FQAH phases. When CDW coexsts with FQAH, a direct transition from FQAH to trivial CDW insulator is possible.
The transitions between composite Fermi liquid and Fermi liquids at filling -1/2 and -3/4, are described by QED with critically fluctuating CDW orders.
Experiment signatures, such as universal jump of resistivities, follow from the beyond Landau critical theory.
*The Gordon and Betty Moore Foundation EPiQS Initiative, Grant No. GBMF8684 at the Massachusetts Institute of Technology.
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