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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

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

Texto completo
Autor(es):
Zhong, Xiaoliang [1] ; Amorim, Rodrigo G. [2] ; Rocha, Alexandre R. [3] ; Pandey, Ravindra [1]
Número total de Autores: 4
Afiliação do(s) autor(es):
[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
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: Nanotechnology; v. 25, n. 34 AUG 29 2014.
Citações Web of Science: 2
Resumo

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)

Processo FAPESP: 09/07095-1 - Simulações ab initio de sensores de gás em feixes de nanotubos de carbono
Beneficiário:Rodrigo Garcia Amorim
Linha de fomento: Bolsas no Brasil - Pós-Doutorado