Strong Superconductivity with Local Jahn-Teller Phonons in [Formula presented] Solids

J. E. Han, O. Gunnarsson, Vincent Henry Crespi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We analyze fulleride superconductivity at experimental doping levels, treating the electron-electron and electron-phonon interactions on an equal footing, and demonstrate that the Jahn-Teller phonons create a local (intramolecular) pairing which is surprisingly resistant to the Coulomb repulsion, despite the weakness of retardation in these low-bandwidth systems. The requirement for coherence throughout the solid then yields a very strong doping dependence to [Formula presented], one consistent with experiment and much stronger than expected from standard Eliashberg theory.

Original languageEnglish (US)
Number of pages1
JournalPhysical Review Letters
Volume90
Issue number16
DOIs
StatePublished - Jan 1 2003

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phonons
superconductivity
fullerides
electron phonon interactions
electrons
bandwidth
requirements

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

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abstract = "We analyze fulleride superconductivity at experimental doping levels, treating the electron-electron and electron-phonon interactions on an equal footing, and demonstrate that the Jahn-Teller phonons create a local (intramolecular) pairing which is surprisingly resistant to the Coulomb repulsion, despite the weakness of retardation in these low-bandwidth systems. The requirement for coherence throughout the solid then yields a very strong doping dependence to [Formula presented], one consistent with experiment and much stronger than expected from standard Eliashberg theory.",
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Strong Superconductivity with Local Jahn-Teller Phonons in [Formula presented] Solids. / Han, J. E.; Gunnarsson, O.; Crespi, Vincent Henry.

In: Physical Review Letters, Vol. 90, No. 16, 01.01.2003.

Research output: Contribution to journalArticle

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AB - We analyze fulleride superconductivity at experimental doping levels, treating the electron-electron and electron-phonon interactions on an equal footing, and demonstrate that the Jahn-Teller phonons create a local (intramolecular) pairing which is surprisingly resistant to the Coulomb repulsion, despite the weakness of retardation in these low-bandwidth systems. The requirement for coherence throughout the solid then yields a very strong doping dependence to [Formula presented], one consistent with experiment and much stronger than expected from standard Eliashberg theory.

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