Recent advances in materials fabrication have enabled the manufacturing of ordered 2D
electron systems, such as heterogeneous interfaces, atomic layers grown by molecular …

The observation of metallic ground states in a variety of two-dimensional electronic systems
poses a fundamental challenge for the theory of electron fluids. Here evidence is analyzed …

When two sheets of graphene are stacked on top of each other with a small twist of angle
θ≈ 1.1° between them, theory predicts the formation of a flat electronic band,. Experiments …

The distinctive electronic structure found at interfaces between materials can allow
unconventional quantum states to emerge. Here we report on the discovery of …

We study the electron-phonon coupling in twisted bilayer graphene (TBG), which was
recently experimentally observed to exhibit superconductivity around the magic twist angle …

To understand the complex physics of a system with strong electron–electron interactions,
the ideal is to control and monitor its properties while tuning an external electric field applied …

The oxide interface between LaAlO3 and KTaO3 (111) can harbor a superconducting state.
We report that by applying a gate voltage (VG) across KTaO3, the interface can be …

Many layered materials can be cleaved down to individual atomic planes, similar to
graphene, but only a small minority of them are stable under ambient conditions. The rest …

The ability to exfoliate layered materials down to the single layer limit has presented the
opportunity to understand how a gradual reduction in dimensionality affects the properties of …

Abstract Two-dimensional (2D) materials are not expected to be metals at low temperature
owing to electron localization. Consistent with this, pioneering studies on thin films reported …