Graphene devices on standard SiO 2 substrates are highly disordered, exhibiting characteristics
that are far inferior to the expected intrinsic properties of graphene 1, 2, 3, 4, 5, 6, 7, 8, 9, …

The behaviour of strongly correlated materials, and in particular unconventional superconductors,
has been studied extensively for decades, but is still not well understood. This lack of …

The demand for compact ultraviolet laser devices is increasing, as they are essential in
applications such as optical storage, photocatalysis, sterilization, ophthalmic surgery and …

Devices made from graphene encapsulated in hexagonal boron-nitride exhibit pronounced
negative bend resistance and an anomalous Hall effect, which are a direct consequence of …

Materials emitting light in the deep ultraviolet region around 200 nanometers are essential
in a wide-range of applications, such as information storage technology, environmental …

A van der Waals heterostructure is a type of metamaterial that consists of vertically stacked
two-dimensional building blocks held together by the van der Waals forces between the layers…

Heterostructures based on layering of two-dimensional (2D) materials such as graphene
and hexagonal boron nitride represent a new class of electronic devices. Realizing this …

The development of light-emitting diodes with improved efficiency, spectral properties,
compactness and integrability is important for lighting, display, optical interconnect, logic and …

Electrons moving through a spatially periodic lattice potential develop a quantized energy
spectrum consisting of discrete Bloch bands. In two dimensions, electrons moving through a …

van der Waals heterostructures constitute a new class of artificial materials formed by stacking
atomically thin planar crystals. We demonstrated band structure engineering in a van der …