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Charge Carrier Scattering in Polymers: A New Neutral Coupled Soliton Channel
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0001-7468-2946
Univ Brasilia, Brazil.
Univ Florida, FL 32611 USA.
Univ Brasilia, Brazil.
2018 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 8, article id 6595Article in journal (Refereed) Published
Abstract [en]

The dynamical scattering of two oppositely charged bipolarons in non-degenerate organic semiconducting lattices is numerically investigated in the framework of a one-dimensional tight-biding-Hubbard model that includes lattice relaxation. Our findings show that it is possible for the bipolaron pair to merge into a state composed of a confined soliton-antisoliton pair, which is characterized by the appearance of states within less than 0.1 eV from the Fermi level. This compound is in a narrow analogy to a meson confining a quark-antiquark pair. Interestingly, solitons are quasi-particles theoretically predicted to arise only in polymer lattices with degenerate ground state: in the general case of nondegenerate ground state polymers, isolated solitons are not allowed.

Place, publisher, year, edition, pages
NATURE PUBLISHING GROUP , 2018. Vol. 8, article id 6595
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URN: urn:nbn:se:liu:diva-147925DOI: 10.1038/s41598-018-24948-1ISI: 000430919900044PubMedID: 29700347OAI: oai:DiVA.org:liu-147925DiVA, id: diva2:1209556
Note

Funding Agencies|Brazilian Research Council CNPq; Brazilian Research Council CAPES; Brazilian Research Council FINATEC; Brazilian Research Council FAPDF grant [0193.000942/2015]; Brazilian Ministry of Planning, Budget and Management [DIPLA 005/2016]

Available from: 2018-05-23 Created: 2018-05-23 Last updated: 2019-06-27

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