Abstract
The conductance of an Aharonov-Bohm interferometer (ABI), with a strongly correlated quantum dot on one arm, is expressed in terms of the dot Green function, , the magnetic flux and the noninteracting parameters of the ABI . At , Fermi liquid theory yields the exact dependence of . We show that one can extract from the observed , for both closed and open ABI’s. In the latter case, the phase shift deduced from depends strongly on the ’s, and usually . The ’s may also reduce the Kondo temperature.
- Received 15 June 2005
DOI:https://doi.org/10.1103/PhysRevB.72.073311
©2005 American Physical Society