Breakdown of `phase rigidity' and variations of the Fano effect in closed Aharonov-Bohm interferometers

Amnon Aharony, Ora Entin-Wohlman, Tomohiro Otsuka +3

Although the conductance of a closed Aharonov-Bohm interferometer, with a quantum dot on one branch, obeys the Onsager symmetry under magnetic field reversal, it needs not be a per…