Abstract
Centro At´omico Bariloche and Instituto Balseiro,Comisi´on Nacional de Energ´ia At´omica, 8400 Bariloche, Argentina(Dated: November 13, 2008)We study the conductance through Aharonov-Bohm finite ladder rings with strongly interactingelectrons, modelled by the prototypical t-J model. For a wide range of parameters we observecharacteristic dips in the conductance as a function of magnetic flux, predicted so far only in chainswhich are a signature of spin and charge separation. These results open the possibility of observingthis peculiar many-body phenomenon in anisotropic ladder systems and in real nanoscopic devices.
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