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2D materials are a promising platform for realizing tunable quantum states. In this Focus issue we highlight recent advances in the understanding of magnetism in 2D materials and their heterostructures, and survey the discovery and latest understanding of superconductivity and strong correlations in twisted bilayer graphene.
The discovery of long-range magnetic order, strong correlations and superconductivity in 2D materials provides new opportunities to study and control these phenomena.
Magic-angle twisted bilayer graphene plays host to many interesting phenomena, including superconductivity. This Review highlights key research results in the field, points toward important open questions, and comments on the place of magic-angle twisted bilayer graphene in the strongly correlated quantum matter world.
This Review summarizes recent progress in exploring the intrinsic magnetism of atomically thin van der Waals materials, manipulation of their magnetism by tuning the interlayer coupling, and device structures for spin- and valleytronic applications.
The development of a magneto-optical imaging technique enables the real-time imaging and control of critical magnetic fluctuations in the single-layer ferromagnetic insulator CrBr3.
Gating dependent laser induced spin dynamics in an antiferromagnetic bilayer are observed and explained, with implications for future spintronic applications.
A large longitudinal resistance and zero Hall plateau—hallmarks of an axion insulator—are found in MnBi2Te4. Moreover, a moderate magnetic field drives a quantum phase transition to a Chern insulator phase with zero longitudinal resistance and quantized Hall resistance h/e2.
Pressure-induced changes in the magnetic order of bilayer and trilayer van der Waals crystals are revealed and attributed to changes in the stacking arrangement.
Pressure-induced changes in the magnetic order of atomically thin van der Waals crystals are revealed and attributed to changes in the stacking arrangement.
The application of electric fields enables reversible switching of the magnetic order of CrI3 bilayers between antiferromagnetic and ferromagnetic states.