120 citations · 793 across the 36 of their papers we have counts for
8 papers · 1 filter
Generalized waveguide approach to tight-binding wires: Understanding large vortex currents in quantum rings
Gianluca Stefanucci, Enrico Perfetto, Stefano Bellucci +1
We generalize the quantum waveguide approach to Hückel or tight-binding models relevant to unsaturated $\p$ molecular devices. A Landauer-like formula for the current density throu…
Filtering of spin currents based on ballistic ring
S. Bellucci, P. Onorato
Quantum interference effects in rings provide suitable means for controlling spin at mesoscopic scales. Here we apply such a control mechanism to the spin-dependent transport in a…
Spin separation in a T ballistic nanojunction due to lateral-confinement-induced spin-orbit-coupling
S. Bellucci, F. Carillo, P. Onorato
We propose a new scheme of spin filtering employing ballistic nanostructures in two dimensional electron gases (2DEGs). The proposal is essentially based on the spin-orbit (SO) int…
Quantum Hall effect in carbon nanotubes and curved graphene strips
E. Perfetto, J. Gonzalez, F. Guinea +2
We develop a long wavelength approximation in order to describe the low-energy states of carbon nanotubes in a transverse magnetic field. We show that, in the limit where the squar…
Quenching of Spin Hall Effect in Ballistic nano-junctions
S. Bellucci, P. Onorato
We show that a nanometric four-probe ballistic junction can be used to check the presence of a transverse spin Hall current in a system with a Spin Orbit coupling not of the Rashba…
Quantum Hall effect in carbon nanotubes
E. Perfetto, J. Gonzalez, F. Guinea +2
We investigate the effects of a transverse magnetic field on the transport properties of carbon nanotubes, making use of a long-wavelength description in terms of Dirac fermion fie…