Dispersionless energy bands in k space are a peculiar property gathering increasing
attention for the emergence of novel electronic, magnetic, and photonic properties. Here, we …

We combine electron energy-loss spectroscopy and first-principles calculations based on
density-functional theory (DFT) to identify the lowest indirect exciton state in the in-plane …

We perform first-principles GW plus Bethe-Salpeter equation calculations to investigate the
photophysics of monolayer hexagonal boron nitride (h-BN), revealing excitons with novel k …

Layered compounds are stacks of weakly bound two-dimensional atomic crystals, with a
prototypal hexagonal structure in graphene, transition metal dichalcogenides and boron …

In this letter we report a thorough analysis of the exciton dispersion in bulk hexagonal boron
nitride. We solve the ab initio GW Bethe-Salpeter equation at finite q∥ Γ K, which is relevant …

Single-photon emitters serve as building blocks for many emerging concepts in quantum
photonics. The recent identification of bright, tunable and stable emitters in hexagonal boron …

Hexagonal boron nitride is a wide bandgap semiconductor with very high thermal and
chemical stability that is used in devices operating under extreme conditions. The growth of …

Quantum emitters in hexagonal boron nitride were recently reported to hold unusual narrow
homogeneous linewidths of tens of megahertz within the Fourier transform limit at room …

Phonon polaritons enable light confinement at deep subwavelength scales, with potential
technological applications, such as subdiffraction imaging, sensing and engineering of …

Hexagonal boron nitride (hBN) is an emerging material in nanophotonics and an attractive
host for color centers for quantum photonic devices. Here, we show that optical emission …