Tuning edge state localization in graphene nanoribbons by in-plane bending

P.H. Jacobse, Simon Stuij, V. Juricic, Cristiane de Morais Smith

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

The electronic properties of graphene are influenced by both geometric confinement and strain. We study the electronic structure of in-plane bent graphene nanoribbons, systems where confinement and strain are combined. To understand its electronic properties, we develop a tight-binding model that has a small computational cost and is based on exponentially decaying hopping and overlap parameters. Using this model, we show that the edge states in zigzag graphene nanoribbons are sensitive to bending and develop an effective dispersion that can be described by a one-dimensional atomic chain model. Because the velocity of the electrons at the edge is proportional to the slope of the dispersion, the edge states become gradually delocalized upon increasing the strength of bending.
Original languageEnglish
Number of pages10
JournalPhysical review. B, Condensed matter and materials physics
Volume92
Issue number7
DOIs
Publication statusPublished - 19 Aug 2015

Fingerprint

Dive into the research topics of 'Tuning edge state localization in graphene nanoribbons by in-plane bending'. Together they form a unique fingerprint.

Cite this