99 citations · 455 across the 29 of their papers we have counts for
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Anomalous Floquet tunneling in uniaxially strained graphene
Yonatan Betancur-Ocampo, Parisa Majari, Diego Espitia +2
The interplay of strain engineering and photon-assisted tunneling of electrons in graphene is considered for giving rise to atypical transport phenomena. The combination of uniaxia…
Gradient-index electron optics in graphene pn junctions
Emmanuel Paredes-Rocha, Yonatan Betancur-Ocampo, Nikodem Szpak +1
We investigate the electron transport in smooth graphene pn junctions, generated by gradually varying electrostatic potentials. The numerically calculated coherent current flow pat…
Hidden duality and accidental degeneracy in cycloacene and Möbius cycloacene
Emerson Sadurní, Francois Leyvraz, Thomas Stegmann +2
The accidental degeneracy appearing in cycloacenes as triplets and quadruplets is explained with the concept of segmentation, introduced here with the aim of describing the effecti…
Phosphorene pnp junctions as perfect electron waveguides
Yonatan Betancur-Ocampo, Emmanuel Paredes-Rocha, Thomas Stegmann
The current flow in phosphorene pnp junctions is studied. At the interfaces of the junction, omni-directional total reflection takes place, named anti-super-Klein tunneling, as thi…
Current vortices in aromatic carbon molecules
Thomas Stegmann, John A. Franco-Villafañe, Yenni P. Ortiz +6
The local current flow through three small aromatic carbon molecules, namely benzene, naphthalene and anthracene, is studied. Applying density functional theory and the non-equilib…