Abstract
We study the phase of the transmission amplitude through a disordered quantum dot in the Coulomb blockade regime. We calculate the phase dependence on gate voltage for a disorder configuration. We show that over a “period,” consisting of a resonance and a transmission valley, the total phase change is 0 (mod ). Deviations from this sum rule are small in the parameter (level spacing and/or charging energy). The disorder-averaged phase-phase correlation function is found showing interaction-induced correlations between phases at different gate voltages.
- Received 4 August 1999
DOI:https://doi.org/10.1103/PhysRevLett.83.5094
©1999 American Physical Society