Signature of the Dirac cone in the properties of linear oligoacenes

Richard Korytár (), Dimitra Xenioti, Peter Schmitteckert, Mébarek Alouani and Ferdinand Evers
Additional contact information
Richard Korytár: Institut für Nanotechnologie, Karlsruhe Institute of Technology (KIT)
Dimitra Xenioti: Institut für Nanotechnologie, Karlsruhe Institute of Technology (KIT)
Peter Schmitteckert: Institut für Nanotechnologie, Karlsruhe Institute of Technology (KIT)
Mébarek Alouani: Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504 CNRS-UdS
Ferdinand Evers: Institut für Nanotechnologie, Karlsruhe Institute of Technology (KIT)

Nature Communications, 2014, vol. 5, issue 1, 1-7

Abstract: Abstract Organic electronics offers prospects of functionality for science, industry and medicine that are new as compared with silicon technology and available at a very low material cost. Among the plethora of organic molecules available for materials design, polymers and oligomers are very promising, for example, because of their mechanical flexibility. They consist of repeated basic units, such as benzene rings, and the number of these units N determines their excitation gap, a property that is often used in proposals of organic photovoltaics. Here, we show that contrary to a widely held belief the magnitudes of excitation gaps do not always decay monotonously with N, but can oscillate due to the presence of a ‘Dirac cone’ in the band structure. With an eye on the more fundamental question how a molecular wire becomes metallic with increasing length, our research suggests that the process can exhibit incommensurate oscillations.

Date: 2014
References: Add references at CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.nature.com/articles/ncomms6000 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms6000

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms6000

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().