TY - JOUR
T1 - Moiré metrology of energy landscapes in van der Waals heterostructures
AU - Halbertal, Dorri
AU - Finney, Nathan R.
AU - Sunku, Sai S.
AU - Kerelsky, Alexander
AU - Rubio-Verdú, Carmen
AU - Shabani, Sara
AU - Xian, Lede
AU - Carr, Stephen
AU - Chen, Shaowen
AU - Zhang, Charles
AU - Wang, Lei
AU - Gonzalez-Acevedo, Derick
AU - McLeod, Alexander S.
AU - Rhodes, Daniel
AU - Watanabe, Kenji
AU - Taniguchi, Takashi
AU - Kaxiras, Efthimios
AU - Dean, Cory R.
AU - Hone, James C.
AU - Pasupathy, Abhay N.
AU - Kennes, Dante M.
AU - Rubio, Angel
AU - Basov, D. N.
N1 - Publisher Copyright:
© 2021, The Author(s).
PY - 2021/12/1
Y1 - 2021/12/1
N2 - The emerging field of twistronics, which harnesses the twist angle between two-dimensional materials, represents a promising route for the design of quantum materials, as the twist-angle-induced superlattices offer means to control topology and strong correlations. At the small twist limit, and particularly under strain, as atomic relaxation prevails, the emergent moiré superlattice encodes elusive insights into the local interlayer interaction. Here we introduce moiré metrology as a combined experiment-theory framework to probe the stacking energy landscape of bilayer structures at the 0.1 meV/atom scale, outperforming the gold-standard of quantum chemistry. Through studying the shapes of moiré domains with numerous nano-imaging techniques, and correlating with multi-scale modelling, we assess and refine first-principle models for the interlayer interaction. We document the prowess of moiré metrology for three representative twisted systems: bilayer graphene, double bilayer graphene and H-stacked MoSe2/WSe2. Moiré metrology establishes sought after experimental benchmarks for interlayer interaction, thus enabling accurate modelling of twisted multilayers.
AB - The emerging field of twistronics, which harnesses the twist angle between two-dimensional materials, represents a promising route for the design of quantum materials, as the twist-angle-induced superlattices offer means to control topology and strong correlations. At the small twist limit, and particularly under strain, as atomic relaxation prevails, the emergent moiré superlattice encodes elusive insights into the local interlayer interaction. Here we introduce moiré metrology as a combined experiment-theory framework to probe the stacking energy landscape of bilayer structures at the 0.1 meV/atom scale, outperforming the gold-standard of quantum chemistry. Through studying the shapes of moiré domains with numerous nano-imaging techniques, and correlating with multi-scale modelling, we assess and refine first-principle models for the interlayer interaction. We document the prowess of moiré metrology for three representative twisted systems: bilayer graphene, double bilayer graphene and H-stacked MoSe2/WSe2. Moiré metrology establishes sought after experimental benchmarks for interlayer interaction, thus enabling accurate modelling of twisted multilayers.
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U2 - 10.1038/s41467-020-20428-1
DO - 10.1038/s41467-020-20428-1
M3 - Article
C2 - 33431846
AN - SCOPUS:85099248702
SN - 2041-1723
VL - 12
JO - Nature communications
JF - Nature communications
IS - 1
M1 - 242
ER -