Low Temperature Physics: 43, 95 (2017); https://doi.org/10.1063/1.4974188
Физика Низких Температур: Том 43, Выпуск 1 (Январь 2017), c. 115-121 ( к оглавлению , назад )
Two-instanton approximation to the Coulomb blockade problem
L.D. Landau Institute for Theoretical Physics, 2 Kosygina Str., Moscow117940, Russia
Laboratory for Condensed Matter Physics, National Research University Higher School of Economics Moscow 101000, Russia
Received July 13, 2016
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.
PACS: 73.23.Hk Coulomb blockade; single-electron tunneling;
Ключевые слова: Ambegaokar–Eckern–Schön model, current-voltage characteristic, Coulomb blockade oscillations.
Published online: November 25, 2016