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Nonperturbative calculation of Coulomb blockade in a small tunnel junction

✍ Scribed by G.Y. Hu; R.F. O'Connell; J. Cai

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
154 KB
Volume
194-196
Category
Article
ISSN
0921-4526

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✦ Synopsis

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 currentvoltage (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 demostrate that the widely used Ohmic approximation (tunneling impedance Z(e0) = R T ) for the effect of dissipation on Coulomb blockade, is satisfactory in the range of R T -R k to IOR k (R k = 25.8 162).

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