Transport properties of normal metal–graphene nanoribbon–normal metal junctions

• Published in: Physica. E, Low-dimensional systems & nanostructures Vol. 42; no. 4; pp. 722 - 725
• Main Authors: Mochizuki, Yoneko, Yoshioka, Hideo
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 01.02.2010; Elsevier
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures; Electronic transport in multilayers, nanoscale materials and structures; Exact sciences and technology; Graphene nanoribbon; Junction; Klein edge; Physics; Transport property; Zigzag edge; Transport property; Junction; Klein edge; Zigzag edge; Graphene nanoribbon; Asymptotic behavior; Nanotape; Numerical method; Graphene; Analytical method; Transport processes; Heterostructures; Zig zag model
• ISSN: 1386-9477; 1873-1759
• DOI: 10.1016/j.physe.2009.10.035

Transport properties are investigated theoretically for the junctions consisting of two normal metals and a graphene nanoribbon which has zigzag shaped edges with the electron hopping weaker than that in the other region. We find that the conductance of the present model has the same asymptotic behavior for N L ⪢ 1 as that with the spatially uniform hopping in the N ≥ 3 case, where N L and N are integers corresponding to length and width, respectively. The result seems to indicate that the zigzag edges do not contribute to the transport properties in the case with N L ⪢ 1 .