Two-loop approximation in the Coulomb blockade problem

S. Beloborodov, V. Andreev, I. Larkin

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20 Citations (Scopus)


We study Coulomb blockade (CB) oscillations in the thermodynamics of a metallic grain connected to a lead by a tunneling contact with a large conductance g0 in a wide temperature range, [formula preasented], where EC is the charging energy. Using the instanton analysis and the renormalization-group approach we obtain our main result, the temperature dependence of the amplitude of CB oscillations, which differs from the previously obtained results. Assuming that at [formula preasented] the oscillation amplitude weakly depends on temperature we estimate the magnitude of CB oscillations in the ground-state energy as [formula preasented].

Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number2
Publication statusPublished - 2003
Externally publishedYes


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