Strong Correlations in Electron Doped Phthalocyanine Conductors Near Half Filling
Erio Tosatti, Michele Fabrizio, Jaroslav Tobik, Giuseppe E. Santoro
Abstract
We propose that electron doped nontransition metal-phthalocyanines (MPc) like ZnPc and MgPc, similar to those very recently reported, should constitute novel strongly correlated metals. Due to orbital degeneracy, Jahn-Teller coupling and Hund's rule exchange, and with a large on-site Coulomb repulsion, these molecular conductors should display, particularly near half filling at two electrons/molecule, very unconventional properties, including Mott insulators, strongly correlated superconductivity, and other intriguing phases.
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