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Effects of the environment on the electric conductivity of double-stranded DNA molecules

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dc.contributor.authorMalyshev, Andrey
dc.contributor.authorDíaz García, Elena
dc.contributor.authorDomínguez-Adame Acosta, Francisco
dc.date.accessioned2023-06-20T04:13:42Z
dc.date.available2023-06-20T04:13:42Z
dc.date.issued2009-08-19
dc.description© Copyright IOP Publishing. This work was supported by Ramón y Cajal Program, MEC (Project MOSAICO), and BSCH-UCM (Project PR34/07-15916).
dc.description.abstractWe present a theoretical analysis of the effects of the environment on charge transport in double-stranded synthetic poly(G)-poly(C) DNA molecules attached to two ideal leads. Coupling of the DNA to the environment results in two effects: (i) localization of carrier functions due to static disorder and (ii) phonon-induced scattering of the carriers between the localized states, resulting in hopping conductivity. A nonlinear Pauli master equation for populations of localized states is used to describe the hopping transport and calculate the electric current as a function of the applied bias. We demonstrate that, although the electronic gap in the density of states shrinks as the disorder increases, the voltage gap in the I-V characteristics becomes wider. A simple physical explanation of this effect is provided.
dc.description.departmentDepto. de Física de Materiales
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Educación y Ciencia (MEC), España
dc.description.sponsorshipPrograma Ramón y Cajal (MEC)
dc.description.sponsorshipBanco Santander Central Hispano (BSCH)
dc.description.sponsorshipUniversidad Complutense de Madrid (UCM)
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/37885
dc.identifier.doi10.1088/0953-8984/21/33/335105
dc.identifier.issn0953-8984
dc.identifier.officialurlhttp://dx.doi.org/10.1088/0953-8984/21/33/335105
dc.identifier.relatedurlhttp://iopscience.iop.org/
dc.identifier.relatedurlhttp://arxiv.org/abs/0906.4518v1
dc.identifier.urihttps://hdl.handle.net/20.500.14352/45066
dc.issue.number33
dc.journal.titleJournal of physics: condensed matter
dc.language.isoeng
dc.publisherIOP Publishing Ltd.
dc.relation.projectIDProject MOSAICO
dc.relation.projectIDPR34/07-15916
dc.rights.accessRightsopen access
dc.subject.cdu538.9
dc.subject.keywordLocalized Frenkel excitons
dc.subject.keywordTemperature-dependence
dc.subject.keywordRadiative lifetime
dc.subject.keywordTransport
dc.subject.keywordSequence
dc.subject.keywordStatistics
dc.subject.keywordDynamics
dc.subject.keywordDisorder
dc.subject.keywordChains
dc.subject.keywordLength
dc.subject.ucmFísica de materiales
dc.titleEffects of the environment on the electric conductivity of double-stranded DNA molecules
dc.typejournal article
dc.volume.number21
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