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

In order to understand the emergence of superconductivity it is useful to study the reverse
process and identify the various pathways that lead to its destruction. One way is to increase …

Although copper oxide high-temperature superconductors constitute a complex and diverse
material family, they all share a layered lattice structure. This curious fact prompts the …

Controlling the strength of interactions is essential for studying quantum phenomena
emerging in systems of correlated fermions. We introduce a device geometry whereby magic …

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 …

NATURE abounds with phase transitions. The boiling and freezing of water are everyday
examples of phase transitions, as are more exotic processes such as superconductivity and …

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 …

Recently emerging two-dimensional (2D) superconductors in atomically thin layers and at
heterogeneous interfaces are attracting growing interest in condensed matter physics. Here …

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 …