2006/02/06 by Nicola Manini, Manini, Nicola, Erio Tosatti +1 · 1 citation
Chemistry · Physics and Astronomy · #Advanced Chemical Physics Studies #Advanced Physical and Chemical Molecular Interactions #FOS: Physical sciences #Fullerene Chemistry and Applications #Strongly Correlated Electrons (cond-mat.str-el) #Superconductivity (cond-mat.supr-con) #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.cond-mat/0602134
51 pages, 20 figures. v2: updated 2 journal references
openalex publication_date 2006/02/06 · arxiv created 2006/02/17 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We review some theoretical aspects connected with the interplay of strong electron correlations and vibron phenomena in negative fullerene ions and in solid fulleride conductors, superconductors and insulators. The first part covers molecular ions, their intra-molecular Jahn-Teller effect, Coulomb (Hund's rule) exchange interactions, molecular vibrons and multiplet splittings. The second part addresses electron propagation in molecular fullerides, with special emphasis given to trivalent cases such as K3C60 and NH3 K3C60, where metallic, superconducting and Mott insulating phases are at play. Dynamical mean field theory approaches to a simplified Hamiltonian for this system are discussed in the light of some of the observed phenomenology. It is argued in particular that NH3 K3C60 is a Mott-Jahn-Teller insulator, which under pressure turns into a strongly correlated superconductor, thus sharing some important elements with the high-Tc cuprates.