Colloquium: Quantum anomalous Hall effect

CZ Chang, CX Liu, AH MacDonald - Reviews of Modern Physics, 2023 - APS
The quantum Hall (QH) effect, quantized Hall resistance combined with zero longitudinal
resistance, is the characteristic experimental fingerprint of Chern insulators—topologically …

Reproducibility in the fabrication and physics of moiré materials

CN Lau, MW Bockrath, KF Mak, F Zhang - Nature, 2022 - nature.com
Overlaying two atomic layers with a slight lattice mismatch or at a small rotation angle
creates a moiré superlattice, which has properties that are markedly modified from (and at …

Staggered circular nanoporous graphene converts electromagnetic waves into electricity

H Lv, Y Yao, S Li, G Wu, B Zhao, X Zhou… - Nature …, 2023 - nature.com
Harvesting largely ignored and wasted electromagnetic (EM) energy released by electronic
devices and converting it into direct current (DC) electricity is an attractive strategy not only …

Symmetry-broken Josephson junctions and superconducting diodes in magic-angle twisted bilayer graphene

J Díez-Mérida, A Díez-Carlón, SY Yang, YM Xie… - Nature …, 2023 - nature.com
The coexistence of gate-tunable superconducting, magnetic and topological orders in magic-
angle twisted bilayer graphene provides opportunities for the creation of hybrid Josephson …

Magic-angle twisted bilayer graphene as a topological heavy fermion problem

ZD Song, BA Bernevig - Physical review letters, 2022 - APS
Magic-angle (θ= 1.0 5°) twisted bilayer graphene (MATBG) has shown two seemingly
contradictory characters: the localization and quantum-dot-like behavior in STM …

Fractional Chern insulators in magic-angle twisted bilayer graphene

Y Xie, AT Pierce, JM Park, DE Parker, E Khalaf… - Nature, 2021 - nature.com
Abstract Fractional Chern insulators (FCIs) are lattice analogues of fractional quantum Hall
states that may provide a new avenue towards manipulating non-Abelian excitations. Early …

Superconductivity, superfluidity and quantum geometry in twisted multilayer systems

P Törmä, S Peotta, BA Bernevig - Nature Reviews Physics, 2022 - nature.com
Superconductivity has been observed in moiré systems such as twisted bilayer graphene,
which host flat, dispersionless electronic bands. In parallel, theory work has discovered that …

Quantum textures of the many-body wavefunctions in magic-angle graphene

KP Nuckolls, RL Lee, M Oh, D Wong, T Soejima… - Nature, 2023 - nature.com
Interactions among electrons create novel many-body quantum phases of matter with
wavefunctions that reflect electronic correlation effects, broken symmetries and collective …

Flavour Hund's coupling, Chern gaps and charge diffusivity in moiré graphene

JM Park, Y Cao, K Watanabe, T Taniguchi… - Nature, 2021 - nature.com
Interaction-driven spontaneous symmetry breaking lies at the heart of many quantum
phases of matter. In moiré systems, broken spin/valley 'flavour'symmetry in flat bands …

Catalogue of flat-band stoichiometric materials

N Regnault, Y Xu, MR Li, DS Ma, M Jovanovic… - Nature, 2022 - nature.com
Topological electronic flattened bands near or at the Fermi level are a promising route
towards unconventional superconductivity and correlated insulating states. However, the …