Monday, April 8, 2013

1304.1613 (Minjae Kim et al.)

Correlated Electronic Structures and the Phase Diagram of
Hydrocarbon-based Superconductors
   [PDF]

Minjae Kim, B. I. Min, Hong Chul Choi, Ji Hoon Shim
We have investigated correlated electronic structures and the phase diagram of electron-doped hydrocarbon molecular solids, based on the dynamical mean-field theory. We have found that the ground state of hydrocarbon-based superconductors such as electron-doped picene and coronene is a multi-band Fermi liquid, while that of non-superconducting electron-doped pentacene is a single-band Fermi liquid in the proximity of the metal-insulator transition. The size of the molecular orbital energy level splitting plays a key role in producing the superconductivity of electron-doped hydrocarbon solids. The multi-band nature of hydrocarbon solids would boost the superconductivity through the enhanced density of states at the Fermi level.
View original: http://arxiv.org/abs/1304.1613

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