43 citations · 144 across the 16 of their papers we have counts for
16 papers
Fine-Tuned Machine-Learned Interatomic Potentials for Structural and Vibrational Properties of Twisted 2D Materials
Viet-Anh Tran, Viet-Hung Nguyen, Wei Chen +2
Twisted van der Waals bilayers form moiré superlattices whose structural and vibrational properties are highly sensitive to variations in local stacking registry and the degree of…
Mapping the twist angle dependence of quasi-Brillouin zones in doubly aligned graphene/BN heterostructures
Jorge Vallejo Bustamante, Viet-Hung Nguyen, Liam S. Farrar +5
When monolayer graphene is crystallographically aligned to hexagonal boron nitride (BN), a moiré superlattice is formed, producing characteristic satellite Dirac peaks in the elect…
Proximity Effects Between the Graphene Quasicrystal and Magic-Angle Twisted Bilayer Graphene
Pedro Alcázar Guerrero, Viet-Hung Nguyen, Aron W. Cummings +2
We present a numerical study of three-layer graphene heterostructures in which the layers are twisted by the magic angle (1.1) or by to form a graphe…
Impact of the angular alignment on the crystal field and intrinsic doping of bilayer graphene/BN heterostructures
L. S. Farrar, G. Maffione, V. -H. Nguyen +5
The ability to tune the energy gap in bilayer graphene makes it the perfect playground for the study of the effects of internal electric fields, such as the crystalline field, whic…
Recursive Green's functions optimized for atomistic modelling of large superlattice-based devices
Viet-Hung Nguyen, Jean-Christophe Charlier
The Green's function method is recognized to be a very powerful tool for modelling quantum transport in nanoscale electronic devices. As atomistic calculations are generally expens…
Thermoelectric Properties of Graphene through BN-ring Doping: A Theoretical Investigation
Laura Caputo, Viet-Hung Nguyen, Jean-Christophe Charlier
Graphene has been widely studied for various applications due to its outstanding electrical and mechanical properties. However, its potential in thermoelectric applications has bee…
Exploring Dielectric Properties in Models of Amorphous Boron Nitride
Thomas Galvani, Ali K. Hamze, Laura Caputo +8
We report a theoretical study of dielectric properties of models of amorphous Boron Nitride, using interatomic potentials generated by machine learning. We first perform first-prin…
Disorder-Induced Delocalization in Magic-Angle Twisted Bilayer Graphene
Pedro Alcázar Guerrero, Viet-Hung Nguyen, Jorge Martínez Romeral +4
Flat bands in moiré systems are exciting new playgrounds for the generation and study of exotic many-body physics phenomena in low-dimensional materials. Such physics is attributed…
Klein tunneling degradation and enhanced Fabry-Pérot interference in graphene/h-BN moiré-superlattice devices
Viet-Anh Tran, Viet-Hung Nguyen, Jean-Christophe Charlier
Hexagonal boron-nitride (h-BN) provides an ideal substrate for supporting graphene devices to achieve fascinating transport properties, such as Klein tunneling, electron optics and…
Electronic properties of twisted multilayer graphene
V. Hung Nguyen, Trinh X. Hoang, J. -C. Charlier
Twisted bilayer graphene displays many fascinating properties that can be tuned by varying the relative angle (also called twist angle) between its monolayers. As a remarkable feat…
Electronic localization in small-angle twisted bilayer graphene
V. Hung Nguyen, D. Paszko, M. Lamparski +3
Close to a magical angle, twisted bilayer graphene (TBLG) systems exhibit isolated flat electronic bands and, accordingly, strong electron localization. TBLGs have hence been ideal…
Optimizing Dirac fermions quasi-confinement by potential smoothness engineering
Boris Brun, Nicolas Moreau, Sowmya Somanchi +7
With the advent of high mobility encapsulated graphene devices, new electronic components ruled by Dirac fermions optics have been envisioned and realized. The main building blocks…
Imaging Dirac fermions flow through a circular Veselago lens
Boris Brun, Nicolas Moreau, Sowmya Somanchi +6
Graphene charge carriers behave as relativistic massless fermions, thereby exhibiting a variety of counter-intuitive behaviors. In particular, at p-n junctions, they behave as phot…
Optical Hall effect in strained graphene
Viet Hung Nguyen, Aurélien Lherbier, Jean-Christophe Charlier
When passing an optical medium in the presence of a magnetic field, the polarization of light can be rotated either when reflected at the surface (Kerr effect) or when transmitted…
Transport properties through graphene grain boundaries: strain effects versus lattice symmetry
Viet Hung Nguyen, Trinh Xuan Hoang, Philippe Dollfus +1
As most materials available in macroscopic quantities, graphene appears in a polycrystalline form and thus contains grain boundaries. In the present work, the effect of uniaxial st…
Interplay between Aharonov-Bohm interference and parity selective tunneling in zigzag graphene nanoribbon rings
Viet-Hung Nguyen, Yann-Michel Niquet, Philippe Dollfus
We report a numerical study on Aharonov-Bohm (AB) effect and parity selective tunneling in pn junctions based on zigzag graphene nanoribbon rings. We find that when applying a magn…