"Two-electron resonance in the Coulomb blockade"
When: October 23, 2007 (Tue), 02:00PM to 03:00PM
Note: Special Day & Time: Tuesday at 2 PM
Hosted by:
Antonio Castro Neto
Speaker: Felix von Oppen, Fachbereich Physik, Freie Universität Berlin
This event is part of the Condensed Matter Seminar Series. All seminars will take place in the Metcalf Science Center, Room 352 at noon, unless otherwise noted
Abstract: We study many-body corrections to the cotunneling current via a localized state with energy e_d at large bias voltages V. We show that the transfer of electron pairs, enabled by the Coulomb repulsion in the localized level, results in ionization resonance peaks in the third derivative of the current with respect to V, centered at eV=+- 2 e_d/3. Our results predict the existence of previously unnoticed structure within Coulomb-blockade diamonds.