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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Hybridization effects on the out-of-plane electron tunneling properties of monolayers: is h-BN more conductive than graphene?

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Zhong, Xiaoliang [1] ; Amorim, Rodrigo G. [2] ; Rocha, Alexandre R. [3] ; Pandey, Ravindra [1]
Total Authors: 4
[1] Michigan Technol Univ, Dept Phys, Houghton, MI 49931 - USA
[2] Uppsala Univ, Dept Phys, Uppsala - Sweden
[3] Univ Estadual Paulista, Inst Fis Teor, Sao Paulo - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Nanotechnology; v. 25, n. 34 AUG 29 2014.
Web of Science Citations: 2

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. (AU)

FAPESP's process: 09/07095-1 - Gas sensor ab initio simulation in carbon nanotubes bundles
Grantee:Rodrigo Garcia Amorim
Support type: Scholarships in Brazil - Post-Doctorate