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arXiv · 1806.03340

Dirac spectrum in gated multilayer black phosphorus nanoribbons

J. D. S. Forte·D. J. P. de Sousa·J. Milton Pereira Jr
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Abstract

We investigate the effects of a perpendicular electric field applied to multilayer phosphorene nanoribbons with zigzag and armchair edges. Within the context of the tight-binding model, we explore the electronic properties of these systems giving emphasis to the appearance of Dirac-like spectra, a transition that occurs when the gate density associated with the applied displacement field is greater than the critical value $n_c$. We show that the confinement properties and the screening effects in such systems play an important role on the determination of $n_c$, suggesting a scheme to determine the thickness, width and edge orientation of multilayered phosphorene nanoribbons. We also explore how this transition affects the electronic transport properties of such systems.

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J. D. S. Forte, D. J. P. de Sousa, J. Milton Pereira Jr. 2018-06-08. Dirac spectrum in gated multilayer black phosphorus nanoribbons. https://doi.org/10.1016/j.physe.2019.113578

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