Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
1996-12-07
Phys. Rev. B 55, 15735 (1997)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
5 pages, 3 figures, postscript file also available at http://www.pa.uky.edu/~palacios/papers/eom.ps One figure added. Discussi
Scientific paper
10.1103/PhysRevB.55.15735
We show how a fine, multiple-peak structure can arise in the off-resonance, zero-bias conductance of Coulomb blockade systems. In order to understand how this effect comes about one must abandon the orthodox, mean-field understanding of the Coulomb blockade phenomenon and consider quantum fluctuations in the occupation of the single-particle electronic levels. We illustrate such an effect with a spinless Anderson-like model for multi-level systems and an equation-of-motion method for calculating Green's functions that combines two simple decoupling schemes.
Liu Lerwen
Palacios Javier
Yoshioka Daijiro
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