Colloquium: Quantum anomalous Hall effect
The quantum Hall (QH) effect, quantized Hall resistance combined with zero longitudinal
resistance, is the characteristic experimental fingerprint of Chern insulators—topologically …
resistance, is the characteristic experimental fingerprint of Chern insulators—topologically …
Reproducibility in the fabrication and physics of moiré materials
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 …
creates a moiré superlattice, which has properties that are markedly modified from (and at …
Staggered circular nanoporous graphene converts electromagnetic waves into electricity
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 …
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
The coexistence of gate-tunable superconducting, magnetic and topological orders in magic-
angle twisted bilayer graphene provides opportunities for the creation of hybrid Josephson …
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 …
contradictory characters: the localization and quantum-dot-like behavior in STM …
Fractional Chern insulators in magic-angle twisted bilayer graphene
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 …
states that may provide a new avenue towards manipulating non-Abelian excitations. Early …
Superconductivity, superfluidity and quantum geometry in twisted multilayer systems
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 …
which host flat, dispersionless electronic bands. In parallel, theory work has discovered that …
Quantum textures of the many-body wavefunctions in magic-angle graphene
Interactions among electrons create novel many-body quantum phases of matter with
wavefunctions that reflect electronic correlation effects, broken symmetries and collective …
wavefunctions that reflect electronic correlation effects, broken symmetries and collective …
Flavour Hund's coupling, Chern gaps and charge diffusivity in moiré graphene
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 …
phases of matter. In moiré systems, broken spin/valley 'flavour'symmetry in flat bands …
Catalogue of flat-band stoichiometric materials
Topological electronic flattened bands near or at the Fermi level are a promising route
towards unconventional superconductivity and correlated insulating states. However, the …
towards unconventional superconductivity and correlated insulating states. However, the …