58 citations · 372 across the 26 of their papers we have counts for
4 papers · 1 filter
All-strain based valley filter in graphene nanoribbons using snake states
L. S. Cavalcante, A. Chaves, D. R. da Costa +2
A pseudo-magnetic field kink can be realized along a graphene nanoribbon using strain engineering. Electron transport along this kink is governed by snake states that are character…
Boundary conditions for phosphorene nanoribbons in the continuum approach
D. J. P. de Sousa, L. V. de Castro, D. R. da Costa +1
We investigate the energy spectrum of single layer black phosphorene nanoribbons (BPN) by means of a low-energy expansion of a recently proposed tight-binding model that describes…
Valley filtering using electrostatic potentials in bilayer graphene
D. R. da Costa, A. Chaves, S. H. R. Sena +2
Propagation of an electron wave packet through a quantum point contact (QPC) defined by electrostatic gates in bilayer graphene is investigated. The gates provide a bias between th…
Energy shift and conduction-to-valence band transition mediated by a time dependent potential barrier in graphene
Andrey Chaves, D. R. da Costa, G. O. de Sousa +2
We investigate the scattering of a wave packet describing low-energy electrons in graphene by a time-dependent finite step potential barrier. Our results demonstrate that, after Kl…