2017/04/26 by G. Baskaran, Baskaran, G.
Chemistry · Materials Science · #81V70 #Advanced Physical and Chemical Molecular Interactions #FOS: Physical sciences #Fullerene Chemistry and Applications #Organic and Molecular Conductors Research #Superconductivity (cond-mat.supr-con)
paper · pdf · doi:10.48550/arxiv.1704.08153
openalex publication_date 2017/04/26 · openalex created_date 2017/05/05 · openalex updated_date 2026/07/28
We look for unifying aspects behind superconductivity in aromatic hydrocarbon and fullerene family K3X (X: picene, .. p-terphenyl, .. C60). Aromatic hydrocarbon molecules support RVB states. Consequent stability (aromaticity) makes them reluctant electron acceptors. We argue that X accepts only two (not all three) electrons from K3 and creates charged RVB's in X2-, and becomes a (molecular) Cooper pair box. A weak Josephson coupling between X2- molecules creates a Bose Mott insulator, a potential high Tc superconductor. Remaining lone electron in the complex (K3)2+ occupies a suitable metal orbital hybrid. They hybridize weakly through X2- molecular bridges, to form a half filled band of renormalized K atom orbitals, a Fermionic Mott insulator. An interplay of RVB physics and charge transfer (mutual doping) or external doping leads to superconductivity in one or both Mott insulators. In our theory there is room for room temperature superconductivity.