Publicação: Hybridization effects on the out-of-plane electron tunneling properties of monolayers: is h-BN more conductive than graphene?
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Iop Publishing Ltd
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Electron transport properties through multilayers of hexagonal boron nitride (h-BN) sandwiched between gold electrodes is investigated by density functional theory together with the non-equilibrium Green's function method. The calculated results find that despite graphene being a gapless semimetal and h-BN two-dimensional layer being an insulator, the transmission function perpendicular to the atomic layer plane in both systems is nearly identical. The out-of-plane tunnel current is found to be strongly dependent on the interaction at the interface of the device. As a consequence, single layer h-BN coupled with atomically flat weakly interacting metals such as gold may not work as a good dielectric material, but the absence of sharp resonances would probably lead to more stable out-of-plane electronic transport properties compared to graphene.
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BN monolayer, electron transport, graphene
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Inglês
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Nanotechnology. Bristol: Iop Publishing Ltd, v. 25, n. 34, 7 p., 2014.
