Evidence for the formation of a Mott state in potassium-intercalated pentacene

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dc.creatorCraciun, M. F.
dc.creatorGiovannetti, G.
dc.creatorRogge, S.
dc.creatorBrocks, G.
dc.creatorMorpurgo, A. F.
dc.creatorBrink, J. van den
dc.date2008-02-20
dc.date2008-11-05
dc.date.accessioned2026-07-07T12:57:55Z
dc.date.available2026-07-07T12:57:55Z
dc.descriptionWe investigate electronic transport through pentacene thin-films intercalated with potassium. From temperature-dependent conductivity measurements we find that potassium-intercalated pentacene shows metallic behavior in a broad range of potassium concentrations. Surprisingly, the conductivity exhibits a re-entrance into an insulating state when the potassium concentration is increased past one atom per molecule. We analyze our observations theoretically by means of electronic structure calculations, and we conclude that the phenomenon originates from a Mott metal-insulator transition, driven by electron-electron interactions.
dc.description8 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/0802.2813
dc.identifierhttp://arxiv.org/abs/0802.2813
dc.identifierPhys. Rev. B. 79, 125116 (2009)
dc.identifierdoi:10.1103/PhysRevB.79.125116
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/225074
dc.subjectStrongly Correlated Electrons
dc.subjectMaterials Science
dc.titleEvidence for the formation of a Mott state in potassium-intercalated pentacene
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