Abstract
The electron transmission through a closed Aharonov-Bohm mesoscopic solid-state interferometer, with a quantum dot (QD) on one of the paths, is calculated exactly for a simple model. Although the conductance is an even function of the magnetic flux (due to Onsager’s relations), in many cases one can use the measured conductance to extract both the amplitude and the phase of the “intrinsic” transmission amplitude through the “bare” QD. We also propose to compare this indirect measurement with the (hitherto untested) direct relation .
- Received 17 November 2002
DOI:https://doi.org/10.1103/PhysRevLett.90.156802
©2003 American Physical Society