Abstract
We have investigated the suppression of single-electron charging effects in metallic single-electron transistors when the conductance of the tunnel junctions becomes larger than the conductance quantum . We find that the Coulomb blockade of the conductance is progressively shifted at lower temperatures. The experimental results agree quantitatively with the available expansion at high temperature, and qualitatively with the predictions of an effective two-state model at low temperature, which predicts at a blockade of conductance for all gate voltages.
- Received 27 January 1997
DOI:https://doi.org/10.1103/PhysRevLett.79.1349
©1997 American Physical Society