Session C1: Poster Session I: 2:00 pm - 5:00 pm
2:00 PM–2:00 PM, Monday, March 10, 2008
Morial Convention Center Room: Exhibit Hall A
Sponsoring Unit:
APS
Abstract ID: BAPS.2008.MAR.C1.109
Abstract: C1.00109 : Strong correlation effect in Fullerene C20
Preview Abstract
MathJax On | Off 
Abstract 
Authors:
Fei Lin
(Physics Department, University of Illinois at Urbana-Champaign, IL, USA)
Erik Sorensen
(Department of Physics and Astronomy, McMaster University, Hamilton, ON, Canada)
Catherine Kallin
(Department of Physics and Astronomy, McMaster University, Hamilton, ON, Canada)
John Berlinsky
(Department of Physics and Astronomy, McMaster University, Hamilton, ON, Canada)
Successful synthesis of the gas-phase dodecahedral C20 molecule [Nature 407, 60 (2000)] has stimulated great interest in this material. In this talk we report exact diagonalization and quantum Monte Carlo simulation results on the C20 molecule and a possible solid structure [Phys. Rev. B 76, 033414 (2007)]. Our results suggest that strong electronic correlations suppress the Jahn-Teller effect on the dodecahedral molecule, and make the solid an insulator. We also determine the critical value of the interaction strength for the metal-insulator transition.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2008.MAR.C1.109