Hexagonal boron nitride (h‐BN), an insulating 2D layered material, has recently attracted
tremendous interest motivated by the extraordinary properties it shows across the fields of …

Tip-enhanced nano-spectroscopy and-imaging have significantly advanced our
understanding of low-dimensional quantum materials and their interactions with light …

The sp2-bonded layered compound boron nitride (BN) exists in more than a handful of
different polytypes (ie, different layer stacking sequences) with similar formation energies …

The optical response of 2D materials and their heterostructures is the subject of intense
research with advanced investigation of the luminescence properties in devices made of …

The presence of metastable Bernal stacking boron nitride is verified by combining second
harmonic generation (SHG) and photoluminescence (PL) spectroscopy. The scanning …

As an indirect-bandgap material, diamond owns an inter-band transition absorption
belonging to the phonon-assisted indirect transition process whose image is complex due to …

Twisted bilayer systems with discrete magic angles, such as twisted bilayer graphene
featuring moiré superlattices, provide a versatile platform for exploring novel physical …

When electrons moving in two dimensions (2D) are subjected to a strong uniform magnetic
field, they form flat bands called Landau levels (LLs). LLs can also arise from …

Defects play a very important role in semiconductors and only the control over the defect
properties allows the implementation of materials in dedicated applications. We present an …

The light-matter interaction in bulk semiconductors is in the strong-coupling regime with
hybrid eigenstates, the so-called exciton polaritons and phonon polaritons. In two …