1.7k citations · 14.3k across the 258 of their papers we have counts for
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Flattening conduction and valence bands for interlayer excitons in a moiré MoS/WSe heterobilayer
Sara Conti, Andrey Chaves, Tribhuwan Pandey +4
We explore the flatness of conduction and valence bands of interlayer excitons in MoS/WSe van der Waals heterobilayers, tuned by interlayer twist angle, pressure, and exter…
The overlooked role of band-gap parameter in characterization of Landau levels in a gapped phase semi-Dirac system: the monolayer phosphorene case
Esmaeil Taghizadeh Sisakht, Farhad Fazileh, S. Javad Hashemifar +1
Two-dimensional gapped semi-Dirac (GSD) materials are systems with a finite band gap that their charge carriers behave relativistically in one direction and Schrödinger-like in the…
Gas permeation through graphdiyne-based nanoporous membranes
Zhihua Zhou, Yongtao Tan, Qian Yang +20
Nanoporous membranes based on two dimensional materials are predicted to provide highly selective gas transport in combination with extreme permeability. Here we investigate membra…
Chester supersolid of spatially indirect excitons in double-layer semiconductor heterostructures
Sara Conti, Andrea Perali, Alexander R. Hamilton +3
A supersolid, a counter-intuitive quantum state in which a rigid lattice of particles flows without resistance, has to date not been unambiguously realised. Here we reveal a supers…
AlB and AlB monolayers: emergence of multiple two-dimensional Dirac nodal line semimetals with novel properties
Saeid Abedi, Esmaeil Taghizadeh Sisakht, S. Javad Hashemifar +3
Topological semimetal phases in two-dimensional (2D) materials have gained widespread interest due to their potential applications in developing nanoscale devices. Despite the pred…
Isolated and hybrid bilayer graphene rings
M. Mirzakhani, D. R. da Costa, F. M. Peeters
Using the continuum model, we investigate the electronic properties of two types of bilayer graphene (BLG) quantum ring (QR) geometries: (i) an isolated BLG QR and (ii) a monolayer…
Tunable effective masses of magneto-excitons in two-dimensional materials
Andrey Chaves, F. M. Peeters
Excitonic properties of GeH and SnH, also known as Xanes, are investigated within the effective mass model. A perpendicularly applied magnetic field induces a negat…
Coulomb impurity on a Dice lattice: atomic collapse and bound states
Jing Wang, R. Van Pottelberge, Wen-Sheng Zhao +1
The modification of the quantum states in a Dice lattice due to a Coulomb impurity are investigated. The energy band structure of a pristine Dice lattice consists of a Dirac cone a…
Effective Landé factors for an electrostatically defined quantum point contact in silicene
Bartłomiej Rzeszotarski, Alina Mreńca-Kolasińska, François M. Peeters +1
The transconductance and effective Landé factors for a quantum point contact defined in silicene by the electric field of a split gate is investigated. The strong spin-orbit…
Exponentially selective molecular sieving through angstrom pores
P. Z. Sun, M. Yagmurcukardes, R. Zhang +8
Two-dimensional crystals with angstrom-scale pores are widely considered as candidates for a next generation of molecular separation technologies aiming to provide extreme, exponen…
Confinement and edge effects on atomic collapse in graphene nanoribbons
Jing Wang, Robbe Van Pottelberge, Amber Jacobs +2
Atomic collapse in graphene nanoribbons behaves in a fundamentally different way as compared to monolayer graphene, due to the presence of multiple energy bands and the effect of e…
Electron-hole superfluidity in strained Si/Ge type II heterojunctions
Sara Conti, Samira Saberi Pouya, Andrea Perali +5
Excitons are promising candidates for generating superfluidity and Bose-Einstein Condensation (BEC) in solid state devices, but an enabling material platform with in-built bandstru…
Asymmetric versus symmetric double quantum wells: Band gap tuning without electric field
Dušan B. Topalović, Vladimir V. Arsoski, Milan Ž. Tadić +1
We investigate the electron states in double asymmetric quantum wells grown along the direction. The subbands are computed by means of the enve…
Molecular collapse in graphene: sublattice symmetry effect
Jing Wang, Miša Anđelković, Gaofeng Wang +1
Atomic collapse can be observed in graphene because of its large "effective" fine structure constant, which enables this phenomenon to occur for an impurity charge as low as $Z_c\s…
Evidence of Flat Bands and Correlated States in Buckled Graphene Superlattices
Jinhai Mao, Slaviša P. Milovanović, Miša Anđelković +9
Two-dimensional atomic crystals can radically change their properties in response to external influences such as substrate orientation or strain, resulting in essentially new mater…
Hematite at its thinnest limit
C. Bacaksiz, M. Yagmurcukardes, F. M. Peeters +1
Motivated by the recent synthesis of two-dimensional -FeO [Balan Nat. Nanotech. 13, 602 (2018)], we analyze the structural, vibrational, electronic and magnet…
The magnetic, electronic, and light-induced topological properties in two-dimensional hexagonal FeX2 (X = Cl, Br, I) monolayers
Xiangru Kong, Linyang Li, Liangbo Liang +2
Topological materials are fertile ground for investigating topological phases of matter and topological phase transitions. In particular, the quest for novel topological phases in…
Double moiré with a twist: super-moiré in encapsulated graphene
M. Anđelković, S. P. Milovanović, L. Covaci +1
A periodic spatial modulation, as created by a moiré pattern, has been extensively studied with the view to engineer and tune the properties of graphene. Graphene encapsulated by h…
Electron collimation at van der Waals domain walls in bilayer graphene
Hasan M. Abdullah, D. R. da Costa, H. Bahlouli +3
We show that a domain wall separating single layer graphene (SLG) and AA-stacked bilayer graphene (AA-BLG) can be used to generate highly collimated electron beams which can be ste…
Atomically-thin micas as proton conducting membranes
L. Mogg, G. -P. Hao, S. Zhang +6
Monolayers of graphene and hexagonal boron nitride (hBN) are highly permeable to thermal protons. For thicker two-dimensional (2D) materials, proton conductivity diminishes exponen…
Flat Bands in Buckled Graphene Superlattices
Yuhang Jiang, Miša Anđelković, Slaviša P. Milovanović +8
Interactions between stacked two-dimensional (2D) atomic crystals can radically change their properties, leading to essentially new materials in terms of the electronic structure.…
Tunable circular dipolelike system in graphene: Mixed electron-hole states
R. Van Pottelberge, F. M. Peeters
Coupled electron-hole states are realized in a system consisting of a combination of an electrostatic potential barrier and ring-shaped potential well, which resembles a circular d…
Spectrum of exciton states in monolayer transition metal dichalcogenides: angular momentum and Landau levels
M. Van der Donck, F. M. Peeters
A four-band exciton Hamiltonian is constructed starting from the single-particle Dirac Hamiltonian for charge carriers in monolayer transition metal dichalcogenides (TMDs). The ang…
Correlation functions in electron-electron and electron-hole double quantum wells: Temperature, density and barrier-width dependence
M. W. C. Dharma-wardana, D. Neilson, F. M. Peeters
The classical-map hyper-netted-chain (CHNC) scheme, developed for treating fermion fluids at strong coupling and at finite temperatures, is applied to electron-electron and electro…