115 citations · 956 across the 28 of their papers we have counts for
10 papers · 1 filter
Effects of gold cluster intercalation in graphene: stationary waves and modified QPI features
Cristina Bena, Marion Cranney, Poonam Kumari +2
Gold intercalation beneath epitaxial graphene on SiC produces a cluster phase with unusual standing waves and quasiparticle-interference (QPI) features concentrated near the graphe…
An iterative method bridging DFT, disorder averaging, and experiment in intercalated materials: application to Au-intercalated graphene
Poonam Kumari, Alberto Zobelli, Igor de Melo Froldi +3
Intercalation can strongly modify the electronic dispersion of a host material, as directly revealed by angle-resolved photoemission spectroscopy (ARPES). We develop a general iter…
Excitonic Absorption Signatures of Twisted Bilayer WSe by Electron Energy-Loss Spectroscopy
Steffi Y. Woo, Alberto Zobelli, Robert Schneider +7
Moiré twist angle underpins the interlayer interaction of excitons in twisted van der Waals hetero- and homo-structures. The influence of twist angle on the excitonic absorption of…
Cathodoluminescence excitation spectroscopy: nanoscale imaging of excitation pathways
Nadezda Varkentina, Yves Auad, Steffi Y. Woo +9
Following the lifespan of optical excitations from their creation to decay into photons is crucial in understanding materials optical properties. Macroscopically, techniques such a…
Band gap measurements of monolayer h-BN and insights into carbon-related point defects
Ricardo Javier Peña Román, Fábio J R Costa Costa, Alberto Zobelli +10
Being a flexible wide band gap semiconductor, hexagonal boron nitride (h-BN) has great potential for technological applications like efficient deep ultraviolet light sources, build…
Nanoscale modification of WS trion emission by its local electromagnetic environment
Noémie Bonnet, Hae Yeon Lee, Fuhui Shao +9
Structural, electronic, and chemical nanoscale modifications of transition metal dichalcogenide monolayers alter their optical properties, including the generation of single photon…
Tailored nanoscale plasmon-enhanced vibrational electron spectroscopy
Luiz H. G. Tizei, Vahagn Mkhitaryan, Hugo Lourenço-Martins +12
Vibrational optical spectroscopies can be enhanced by surface plasmons to reach molecular-sized limits of detection and characterization. The level of enhancement strongly depends…
Local electrical control of magnetic order and orientation by ferroelastic domain arrangements just above room temperature
L. C. Phillips, Ryan O. Cherifi, Viktoria Ivanovskaya +10
Ferroic materials (ferromagnetic, ferroelectric, ferroelastic) usually divide into domains with different orientations of their order parameter. Coupling different ferroic systems…
Graphene edge structures: Folding, scrolling, tubing, rippling and twisting
Viktoria V. Ivanovskaya, Philipp Wagner, Alberto Zobelli +3
Conventional three-dimensional crystal lattices are terminated by surfaces, which can demonstrate complex rebonding and rehybridisation, localised strain and dislocation formation.…
BN domains included into carbon nanotubes: role of interface
Viktoriya V. Ivanovskaya, Alberto Zobelli, Odile Stephan +2
We present a density functional theory study on the shape and arrangement of small BN domains embedded into single-walled carbon nanotubes. We show a strong tendency for the BN hex…