19-22 October 2011
Hotel Roanoke, Roanoke VA
US/Eastern timezone
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Strong Correlation Effects in Fullerene Molecules and Solids

20 Oct 2011, 10:45
30m
Crystal Ballroom B (Hotel Roanoke, Roanoke VA)

Crystal Ballroom B

Hotel Roanoke, Roanoke VA

Speaker

Fei Lin (Virginia Tech)

Description

Fullerenes (C20, C36, C60) are a family of Carbon cage molecules that have exactly twelve pentagons. The most famous Fullerene is C60 ("bucky ball"), which when being doped with three electrons per molecule will exhibit superconductivity. Here we describe electronic structures of these molecules with a tight-binding Hubbard model and solve the model with quantum Monte Carlo simulations and exact diagonalization method. We will show how the electronic correlation gets stronger as the molecule becomes more curved, how the strong electronic correlations change the Huckel molecular energy levels, and how we compare the single-particle excitation spectrum for the C60 molecular solid to the photoemission experiments.

Primary author

Fei Lin (Virginia Tech)

Presentation Materials

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