1D-Disordered Conductor with Loops Immersed in a Magnetic Field
  We investigate the conductance of a 1-D disordered conducting loop with two contacts, immersed in a magnetic flux. We show the appearance in this model of the Al'tshuler-Aronov-Spivak behaviour. We also investigate the case of a chain of loops distributed with finite density: in this case we show that the interference effects due to the presence of the loops can lead to the delocalization of the wave function. 
A.S. Cattaneo, A. Gamba, I.V. Kolokolov and M. Martellini