Tuning the Fermi velocity in Dirac materials with an electric field

A Díaz-Fernández, L Chico, JW González… - Scientific reports, 2017 - nature.com
Dirac materials are characterized by energy-momentum relations that resemble those of
relativistic massless particles. Commonly denominated Dirac cones, these dispersion …

Emergent magnetic texture in driven twisted bilayer graphene

DA Bahamon, G Gómez-Santos, T Stauber - Nanoscale, 2020 - pubs.rsc.org
The transport properties of a twisted bilayer graphene barrier are investigated for various
twist angles. Remarkably, for small twist angles around the magic angle θm∼ 1.05°, the …

The nitrogen edge‐doped effect on the static first hyperpolarizability of the supershort single‐walled carbon nanotube

HL Xu, FF Wang, ZR Li, BQ Wang, D Wu… - Journal of …, 2009 - Wiley Online Library
The nitrogen edge‐doped effect on the structure, dipole moment, and first hyperpolarizability
of the supershort single‐walled carbon nanotube (5, 0) has been studied systematically. For …

Gate-controlled conductance through bilayer graphene ribbons

JW González, H Santos, E Prada, L Brey, L Chico - Physical Review B …, 2011 - APS
We study the conductance of a biased bilayer graphene flake with monolayer nanoribbon
contacts. We find that the transmission through the bilayer ribbon strongly depends on the …

Electronic band structure of carbon nanotube superlattices from first-principles calculations

A Ayuela, L Chico, W Jaskólski - Physical Review B—Condensed Matter and …, 2008 - APS
We report on first-principles calculations for metallic carbon nanotube superlattices N (12,
0)∕ N (6, 6) with N= 1–4. Although the calculated band structures show a good overall …

Flux qubit on a mesoscopic nonsuperconducting ring

E Zipper, M Kurpas, M Szeląg, J Dajka, M Szopa - Physical Review B …, 2006 - APS
The possibility of making a flux qubit on a nonsuperconducting mesoscopic ballistic quasi-
one-dimensional ring is discussed. We showed that such a ring can be effectively reduced to …

Interface states in carbon nanotube junctions: Rolling up graphene

H Santos, A Ayuela, W Jaskólski, M Pelc, L Chico - Physical Review B …, 2009 - APS
We study the origin of interface states in carbon nanotube intramolecular junctions between
achiral tubes. By applying the Born-von Karman boundary condition to an interface between …

Electronic properties and reactivity of Pt-doped carbon nanotubes

WQ Tian, LV Liu, YA Wang - Physical Chemistry Chemical Physics, 2006 - pubs.rsc.org
The structures of the (5, 5) single-walled carbon nanotube (SWCNT) segments with
hemispheric carbon cages capped at the ends (SWCNT rod) and the Pt-doped SWCNT rods …

Localized and conducting states in carbon nanotube superlattices

W Jaskólski, L Chico - Physical Review B—Condensed Matter and Materials …, 2005 - APS
The electronic structure and quantum conductance of superlattices made of metallic carbon
nanotubes are investigated. It is shown that minibands with the same origin as …

Metallic carbon nanotube quantum dots under magnetic fields

CG Rocha, A Latgé, L Chico - Physical Review B—Condensed Matter and …, 2005 - APS
Quantum dots made of individual metallic carbon nanotubes are theoretically studied under
the influence of a magnetic field applied in the axial direction. After assessing the …