ISSN:
1434-6036
Keywords:
PACS. 73.40.Gk Tunneling - 73.61.Ph Polymers; organic compounds - 61.16.Ch Scanning probe microscopy; scanning tunneling, atomic force, scanning optical, magnetic force, etc.
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract: In order to study the tunneling of electrons through an interacting, 1D, dimerized molecule connected to leads, we consider the persistent current in a ring embedding this molecule. We find numerically that, for spinless fermions, a molecule with a gap mostly due to interactions, i.e. a Mott-Hubbard gap, gives rise to a larger persistent current than a molecule with the same gap, but due only to the dimerization. In both cases, the tunneling current decreases exponentially with the size of the molecule, but more slowly in the interacting case. Implications for molecular electronic are briefly discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s100510050252
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