The extreme versatility of van der Waals materials originates from their ability to exhibit new
electronic properties when assembled in close proximity to dissimilar crystals. For example …

Topology is a powerful recent concept asserting that quantum states could be globally
protected against local perturbations,. Dissipationless topologically protected states are …

The quantum Hall effect can be substantially affected by interfacial coupling between the
host two-dimensional electron gases and the substrate, and has been predicted to give rise …

Due to weak light-matter interaction, standard chemical vapor deposition (CVD)/exfoliated
single-layer graphene-based photodetectors show low photoresponsivity (on the order of …

We report the fabrication and measurement of top gated epitaxial graphene pn junctions
where exfoliated hexagonal boron nitride (h-BN) is used as the gate dielectric. The four …

We report on a “giant” quantum Hall effect plateau in a graphene-based field-effect transistor
where graphene is capped by a layer of the van der Waals crystal InSe. The giant quantum …

Graphene-based quantised Hall resistance standards promise high precision for the unit
ohm under less exclusive measurement conditions, enabling the use of compact …

One of the aspirations of quantum metrology is to deliver primary standards directly to end-
users thereby significantly shortening the traceability chains and enabling more accurate …

The so-called buffer layer (BL) is a carbon rich reconstructed layer formed during SiC (0001)
sublimation. The covalent bonds between some carbon atoms in this layer and underlying …

By fixing two fundamental constants from quantum mechanics, the Planck constant h and the
elementary charge e, the revised “Système international”(SI) of units endorses explicitly …