Modification of the conductance of single fullerene molecules by endohedral doping

Strozecka, A.; Larsson, A.; Dennis, J.; Dybek, A.; Myslivecek, J.; Muthukumar, K.; Voigtländer, B.

doi:10.1063/1.3236529

Journal Article

Modification of the conductance of single fullerene molecules by endohedral doping

Strozecka, A.FZJ* ; Muthukumar, K. ; Dybek, A. ; Dennis, J. ; Larsson, A. ; Myslivecek, J.FZJ* ; Voigtländer, B.FZJ*

2009
American Institute of Physics Melville, NY

Applied physics letters 95, 133118 (2009) [10.1063/1.3236529]

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Please use a persistent id in citations: http://hdl.handle.net/2128/17424 doi:10.1063/1.3236529

Abstract: We use scanning tunneling microscopy to establish controlled contacts to single molecules of endohedrally doped Ce-2@C-80 fullerenes with C-60 as a reference. The stability of the experimental setup allows for the determination of the conductance of Ce-2@C-80 relative to the conductance of C-60. The endohedral doping reduces the conductance of Ce-2@C-80 by a factor of about five with respect to C-60. Ab initio calculations show that the reason for this reduced conductance is the absence of electron orbitals delocalized over the cage of Ce-2@C-80 in the energy window of the conductance measurement. (C) 2009 American Institute of Physics. [doi:10.1063/1.3236529]

Keyword(s): J

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Physics, Applied

Note: This work was supported by the FP6 project NANO-CAGE (Grant No. MEST-CT-2004-50-6854), the Science Foundation of Ireland, and Czech Project MSM Grant No. 0021620834. We acknowledge the Irish Centre for High-End Computing (ICHEC) for generous allotment of computer resources.

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