Coulomb blockade in metallic grains at large conductance

Abstract

We study Coulomb blockade effects in the thermodynamic quantities of a weakly disordered metallic grain coupled to a metallic lead by a tunneling contact with a large conductance $g_T$. We consider the case of broken time-reversal symmetry and obtain expressions for both the {\em ensemble averaged} amplitude of the Coulomb blockade oscillations of the thermodynamic potential and the correlator of its {\em mesoscopic fluctuations} for a finite mean level spacing $\delta$ in the grain. We develop a novel method which allows for an exact evaluation of the functional integral arising from disorder averaging. The results and the method are applicable in the temperature range $\delta \ll T\ll E_C$.

18 pages, 3 figures (revised version)

References in corpus (1)

• Quantum Effects in Coulomb Blockade

Cited by in corpus (5)

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• Two-loop approximation in the Coulomb blockade problem
• Mesoscopic charging effects in the $\sigma$-model for granular metals
• Nonperturbative interaction effects in the thermodynamics of disordered wires
• Coulomb Blockade with Dispersive Interfaces