TRANSPORT THROUGH INTERACTING AHARONOV-BOHM-CASHER INTERFEROMETERS

We investigate the transport properties of an interacting ring threaded by a magnetic flux and with Rashba spin-orbit coupling, based on a recently developed functional renormalized group technique. In the calculations of the electronic transport processes, the Coloumb On-site interactions are taken into account. For an interacting ring connected to two leads, we find that (i) for Phi(AC) = 0, the behavior of transmission zero at Phi(AB) = pi is generic for the universal regime; (ii) for certain Phi(AC) and Phi(AB), one can use the mesoscopic ring as spin filter even in the presence of the local interaction in the ring.