Ripples, phonons and bandgap in strained graphene

U. Monteverde, J. Pal, O. M. Dawood, Z. L. Li, R. J. Young, H. Y. Kim, M. Missous, L. Britnell, M. A. Migliorato

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Using a novel interatomic force field, called MMP, we study the morphology of Graphene layers under a variety of strain conditions. We report that strain induced ripples possess the 'right' kind of elastic deformation that is necessary in order to produce appreciable bandgap opening, which we calculate using Tight Binding, even for low enough strain that can be accessed through realistic means. At the same time the vibrational properties, calculated from analytic derivatives of the MMP force field and used within the dynamics matrix method, can be easily linked to strain obtained from Molecular Dynamics, opening the way for accurate modelling of Raman data. We also show that our models have allowed us to realize in practice novel devices based on our predictions.

Original languageEnglish
Title of host publication15th International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2015
EditorsYuh-Renn Wu, Joachim Piprek
PublisherIEEE Computer Society
Pages115-116
Number of pages2
ISBN (Electronic)9781479983797
ISBN (Print) 9781479983780
DOIs
Publication statusPublished - 10 May 2015
Event15th International Conference on Numerical Simulation of Optoelectronic Devices - Taipei, Taiwan
Duration: 7 Sept 201511 Sept 2015

Publication series

NameProceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD
Volume2015-May
ISSN (Print)2158-3234

Conference

Conference15th International Conference on Numerical Simulation of Optoelectronic Devices
Abbreviated titleNUSOD 2015
Country/TerritoryTaiwan
CityTaipei
Period7/09/1511/09/15

Keywords

  • Empirical interatomic potential
  • Graphene
  • Molecular Dynamics
  • Tight Binding

Research Beacons, Institutes and Platforms

  • National Graphene Institute

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