Issue 47, 2015

Two-dimensional carbon-based conductive materials with dynamically controlled asymmetric Dirac cones

Abstract

The design of two dimensional graphene-type materials with an anisotropic electron flow direction in the X- and Y-axes opens the door for the development of novel electronic materials with multiple functions in nanoelectronics. In the present work, we have studied the electronic transport properties of a new family of 2D graphene–graphyne hybrids presenting conformationally free phenylethylene subunits. This system ensures two different conductive pathways that are perpendicular to each other: an acene nanoribbon subunit, in the X-axis, with graphene-type conduction, and a free to rotate phenylethylene subunit, in the Y-axis, in which the magnitude of the conduction depends dynamically on the corresponding torsion angle. Our calculations have confirmed that this system presents two different conduction pathways, which are related to the presence of asymmetric Dirac-type cones. Moreover, the Dirac cones can be dynamically modified in the presence of an external gate electrode, which is unprecedented in the literature.

Graphical abstract: Two-dimensional carbon-based conductive materials with dynamically controlled asymmetric Dirac cones

Article information

Article type
Paper
Submitted
05 Aug 2015
Accepted
03 Nov 2015
First published
03 Nov 2015
This article is Open Access
Creative Commons BY-NC license

Phys. Chem. Chem. Phys., 2015,17, 31902-31910

Author version available

Two-dimensional carbon-based conductive materials with dynamically controlled asymmetric Dirac cones

D. Miguel, I. R. Márquez, L. Álvarez de Cienfuegos, N. Fuentes, S. Rodríguez-Bolivar, D. J. Cárdenas, A. J. Mota, F. Gómez-Campos and J. M. Cuerva, Phys. Chem. Chem. Phys., 2015, 17, 31902 DOI: 10.1039/C5CP04631A

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