Source:http://linkedlifedata.com/resource/pubmed/id/17995426
Switch to
| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
18
|
| pubmed:dateCreated |
2007-11-12
|
| pubmed:abstractText |
We present calculations of the quasiparticle energies and band gaps of graphene nanoribbons (GNRs) carried out using a first-principles many-electron Green's function approach within the GW approximation. Because of the quasi-one-dimensional nature of a GNR, electron-electron interaction effects due to the enhanced screened Coulomb interaction and confinement geometry greatly influence the quasiparticle band gap. Compared with previous tight-binding and density functional theory studies, our calculated quasiparticle band gaps show significant self-energy corrections for both armchair and zigzag GNRs, in the range of 0.5-3.0 eV for ribbons of width 2.4-0.4 nm. The quasiparticle band gaps found here suggest that use of GNRs for electronic device components in ambient conditions may be viable.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
|
| pubmed:month |
Nov
|
| pubmed:issn |
0031-9007
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:day |
2
|
| pubmed:volume |
99
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
186801
|
| pubmed:year |
2007
|
| pubmed:articleTitle |
Quasiparticle energies and band gaps in graphene nanoribbons.
|
| pubmed:affiliation |
Department of Physics, University of California at Berkeley, California 94720, USA.
|
| pubmed:publicationType |
Journal Article
|