Electronic transport across linear defects in graphene

Author(s)

Paez, C. J. ; Pereira, A. L. C. ; Rodrigues, J. N. B. ; Peres, N. M. R.

• Document type: Journal article
• Source: PHYSICAL REVIEW B; v. 92, n. 4, p. 16-pg., 2015-07-24.

Abstract

We investigate the low-energy electronic transport across grain boundaries in graphene ribbons and infinite flakes employing two distinct techniques. Using the recursive Green's-function method, we compute the electronic transmittance across different types of grain boundaries in graphene ribbons and flakes. We use the charge and current density spatial distributions to enhance our understanding of their electronic transport properties. We find that electronic transport depends both on the grain boundaries' microscopic details and on their orientation. In addition, we employ the transfer-matrix formalism to analytically study the electronic transport across a class of zigzag grain boundaries with periodicity 3. We find that these grain boundaries give rise to intervalley scattering. (AU)

• FAPESP's process: 12/19060-0 - Breaking of the valley degeneracy (pseudo-spin) in mono and multi-layer graphene: Effects of disorder on the electronic and transport properties
• Grantee: Carlos Jose Paez Gonzalez
• Support Opportunities: Scholarships in Brazil - Post-Doctoral