BEDT-TTF organic superconductors: the entangled role of phonons

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dc.creatorGirlando, Alberto
dc.creatorMasino, Matteo
dc.creatorBrillante, Aldo
dc.creatorDella Valle, Raffaele G.
dc.creatorVenuti, Elisabetta
dc.date2002-02-08
dc.date2002-10-16
dc.date.accessioned2026-07-07T02:44:22Z
dc.date.available2026-07-07T02:44:22Z
dc.descriptionWe calculate the lattice phonons and the electron-phonon coupling of the organic superconductor κ-(BEDT-TTF)_2 I_3, reproducing all available experimental data connected to phonon dynamics. Low-frequency intra-molecular vibrations are strongly mixed to lattice phonons. Both acoustic and optical phonons are appreciably coupled to electrons through the modulation of the hopping integrals (e-LP coupling). By comparing the results relevant to superconducting κ- and β-(BEDT-TTF)_2 I_3, we show that electron-phonon coupling is fundamental to the pairing mechanism. Both e-LP and electron-molecular vibration (e-MV) coupling are essential to reproduce the critical temperatures. The e-LP coupling is stronger, but e-MV is instrumental to increase the average phonon frequency.
dc.description4 pages, including 4 figures. Published version, with Ref. 17 corrected after publication
dc.identifierhttps://arxiv.org/abs/cond-mat/0202141
dc.identifierhttp://arxiv.org/abs/cond-mat/0202141
dc.identifierPhys. Rev. B 66, 100507 (2002)
dc.identifierdoi:10.1103/PhysRevB.66.100507
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/18891
dc.subjectSuperconductivity
dc.titleBEDT-TTF organic superconductors: the entangled role of phonons
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