Title

Nonperturbative calculation of Coulomb blockade in a small tunnel junction

Document Type

Article

Publication Date

2-2-1994

Abstract

A non-perturbative calculation is performed for Coulomb blockade in a small tunnel junction, by use of the closed-time-path Green's function and Odintsov's polaron formulation. Self consistent forms for the current-voltage (I-V) characteristics, the damping function, the fluctuation function, and the non-equilibrium Bose distribution function, are presented. At T=0 and in the weak dissipation limit, analytic results are obtained. In particular, we demonstrate that the widely used ωic approximation (tunneling impedance Z(ω)=RT) for the effect of dissipation on Coulomb blockade, is satisfactory in the range of RT∼Rk to 10Rk (Rk=25.8 kω). © 1994.

Publication Source (Journal or Book title)

Physica B: Physics of Condensed Matter

First Page

1023

Last Page

1024

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