The quantum Hall (QH) effect, quantized Hall resistance combined with zero longitudinal
resistance, is the characteristic experimental fingerprint of Chern insulators—topologically …

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 …

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 …

The critical current of a superconductor can be different for opposite directions of current flow
when both time-reversal and inversion symmetry are broken. Such non-reciprocal behaviour …

Engineering moiré superlattices by twisting layers in van der Waals (vdW) heterostructures
has uncovered a wide array of quantum phenomena. We constructed a vdW heterostructure …

The discovery of superconductivity in twisted bilayer and trilayer graphene,,,–has generated
tremendous interest. The key feature of these systems is an interplay between interlayer …

Strongly correlated systems can give rise to spectacular phenomenology, from high-
temperature superconductivity to the emergence of states of matter characterized by long …

Interactions among electrons create novel many-body quantum phases of matter with
wavefunctions that reflect electronic correlation effects, broken symmetries and collective …

In condensed-matter systems, higher temperatures typically disfavour ordered phases,
leading to an upper critical temperature for magnetism, superconductivity and other …

The flat bands of magic-angle twisted bilayer graphene (MATBG) host strongly correlated
electronic phases such as correlated insulators,,,–, superconductors,,,–and a strange metal …