Delocalization and conductance quantization in one-dimensional systems

Abstract

We investigate the delocalization and conductance quantization in finite one-dimensional chains with only off-diagonal disorder coupled to leads. It is shown that the appearence of delocalized states at the middle of the band under correlated disorder is strongly dependent upon the even-odd parity of the number of sites in the system. In samples with inversion symmetry the conductance equals $2e^2/h$ for odd samples, and is smaller for even parity. This result suggests that this even-odd behaviour found previously in the presence of electron correlations may be unrelated to charging effects in the sample.

submitted to PRB

References in corpus (2)

• Even-odd behavior of conductance in monatomic sodium wires
• Quasi-particle description for the transport through a small interacting system

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