Two-instanton approximation to the Coulomb blockade problem

Abstract

We develop the two-instanton approximation to the current-voltage characteristic of a single electron transistor within the Ambegaokar-Eckern-Schön model. We determine the temperature and gate voltage dependence of the Coulomb blockade oscillations of the conductance and the effective charge. We find that a small (in comparison with the charging energy) bias voltage leads to significant suppression of the Coulomb blockade oscillations and to appearance of the bias-dependent phase shift.

References in corpus (4)

• Coulomb Blockade and Super Universality of the Theta-Angle
• Particle renormalizations in presence of dissipative environments
• Korshunov instantons out of equilibrium
• On the macroscopic quantization in mesoscopic rings and single-electron devices

Cited by in corpus (3)

• Fractional Coulomb blockade in a coupling controlled metallic quantum dot
• Thermal decay of the Coulomb blockade oscillations
• Instantons in the out-of-equilibrium Coulomb blockade