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Enhanced anisotropic electrical conductivity of perturbed monolayer $\beta_{12}$-borophene

Abstract

$\beta_{12}$-borophene is a perfect planar nanolattice comprising of the massless Dirac fermions and massless/massive triplet fermions considering the inversion symmetry lattice model. In this paper, a detailed study of the electric field and the impurities with a low concentration effects on the electronic phase and the electrical conductivity of $\beta_{12}$-borophene is presented. As a direct manner to judge the electronic features of pristine and perturbed monolayer $\beta_{12}$-borophene, the five-band tight-binding Hamiltonian model, the T-matrix theory, the linear response theory, and the Green’s function approach are accompanied. Our investigation reveals that the massless Dirac and triplet fermions become massive when the electric field is applied. Also, we found out that the electric current and eventually the electrical conductivity are not the same along different directions and an enhancement of around 18.53% (15.38%) for the x-direction (in-plane) component is observed at a certain thermal energy. Furthermore, the metal-to-semiconductor electronic phase transition in the presence of different impurity atoms results in a 197.16% (198.23%) enhancement in x- (in-plane) component of electrical conductivity. The results provide a new way of designing novel electronic devices based on $\beta_{12}$-borophene.

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Publication details

The article was accepted on 15 Nov 2019 and first published on 18 Nov 2019


Article type: Paper
DOI: 10.1039/C9CP05597E
Phys. Chem. Chem. Phys., 2019, Accepted Manuscript

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    Enhanced anisotropic electrical conductivity of perturbed monolayer $\beta_{12}$-borophene

    D. Q. Khoa, H. Nguyen and B. Hoi, Phys. Chem. Chem. Phys., 2019, Accepted Manuscript , DOI: 10.1039/C9CP05597E

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