The Open UniversitySkip to content
 

Polarons in highly doped atomically thin graphitic materials

Hague, J. P. (2012). Polarons in highly doped atomically thin graphitic materials. Physical Review B, 86(6) 064302.

DOI (Digital Object Identifier) Link: http://dx.doi.org/10.1103/PhysRevB.86.064302
Google Scholar: Look up in Google Scholar

Abstract

Polaron spectral functions are computed for highly doped graphene-on-substrate and other atomically thin graphitic systems using the diagrammatic Monte Carlo technique. The specific aim is to investigate the effects of interaction on spectral functions when the symmetry between sublattices of a honeycomb lattice has been broken by the substrate or ionicity, inducing a band gap. Introduction of electron-phonon coupling leads to several polaronic features, such as band-flattening and changes in particle lifetimes. At the K point, differences between energies on each sublattice increase with electron-phonon coupling, indicating an augmented transport gap, while the spectral gap decreases slightly. Effects of phonon dispersion and long-range interactions are investigated, and found to lead to only quantitative changes in spectra.

Item Type: Journal Article
Copyright Holders: 2012 American Physical Society
ISSN: 1098-0121
Project Funding Details:
Funded Project NameProject IDFunding Body
Not SetNot SetEPSRC
Extra Information: 7 p.
Academic Unit/Department: Science > Physical Sciences
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Biomedical Research Network (BRN)
Related URLs:
Item ID: 34232
Depositing User: James Hague
Date Deposited: 23 Aug 2012 09:29
Last Modified: 07 Mar 2014 13:48
URI: http://oro.open.ac.uk/id/eprint/34232
Share this page:

Actions (login may be required)

View Item
Report issue / request change

Policies | Disclaimer

© The Open University   + 44 (0)870 333 4340   general-enquiries@open.ac.uk