Аннотация
Density functional theory is employed to study the electronic and
transport properties of a new class of hybrid BNC nanostructures based
on graphene/boron nitride nanoribbons encapsulated by graphene/boron
nitride nanotubes. Our results show spin polarized transport for three
different cases, depending on the nature of the encapsulated nanoribbon
(graphene or hexagonal boron nitride (h-BN)), of its encapsulating
nanotube, and on the orientation of the ribbon. Also, band gap opening
was observed for the armchair carbon nanotube (CNT) based
nanostructures, on which the interaction with the encapsulated
nanoribbon breaks the CNT's sub-lattice symmetry. The electronic
transport properties are studied from the standpoint of the
Landauer-Buttiker formalism, and the results indicate that the current
is spin polarized, which theoretically make these structures suitable
candidates for applications as spintronic devices, such as spin valves
or spin based detectors.
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