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Transport of Polarons in Graphene Nanoribbons
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Chemistry. Linköping University, The Institute of Technology.
University of Brasilia, Brazil.
University of Brasilia, Brazil.
University of Brasilia, Brazil.
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2015 (English)In: Journal of Physical Chemistry Letters, ISSN 1948-7185, E-ISSN 1948-7185, Vol. 6, no 3, 510-514 p.Article in journal (Refereed) Published
Abstract [en]

The field-induced dynamics of polarons in armchair graphene nanoribbons (GNRs) is theoretically investigated in the framework of a two-dimensional tight-binding model with lattice relaxation. Our findings show that the semiconductor behavior, fundamental to polaron transport to take place, depends upon of a suitable balance between the GNR width and the electronphonon (eph) coupling strength. In a similar way, we found that the parameter space for which the polaron is dynamically stable is limited to an even narrower region of the GNR width and the eph coupling strength. Interestingly, the interplay between the external electric field and the eph coupling plays the role to define a phase transition from subsonic to supersonic velocities for polarons in GNRs.

Place, publisher, year, edition, pages
American Chemical Society , 2015. Vol. 6, no 3, 510-514 p.
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:liu:diva-115322DOI: 10.1021/jz502460gISI: 000349137400035OAI: oai:DiVA.org:liu-115322DiVA: diva2:795083
Note

Funding Agencies|Swedish Research Council (VR); CNPq; CAPES; FINATEC

Available from: 2015-03-13 Created: 2015-03-13 Last updated: 2017-12-04

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Ribeiro, Luiz AntonioStafström, Sven

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