https://doi.org/10.1140/epjb/e2005-00239-7
Conductance distributions at the metal-insulator crossover in quasi 1-D pseudorandom wires
1
NEST-INFM, Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126 Pisa, Italy, and Dipartimento di Fisica “E. Fermi”, Università di
Pisa, Largo B. Pontecorvo 3, 56127 Pisa, Italy
2
NEST-INFM and Dipartimento di Fisica “E. Fermi”, Università di
Pisa, Largo B. Pontecorvo 3, 56127 Pisa, Italy
Corresponding author: a farchion@df.unipi.it
Received:
25
February
2005
Published online:
8
August
2005
A study of the distribution of conductances, P(g), for quasi-one-dimensional (multichain)
pseudorandom systems is here presented. We focus on the crossover between the metallic (
) and the insulating
(
) regimes with reference to the case of “cosine" and “tangent" pseudorandom potentials. The results are compared with those obtained for the truly random disordered systems with the same geometry. A rich variety of shapes of P(g) is thus evidenced in the crossover-transport regime and, in the case of identical interacting chains composing the device, we have shown that the conductance distribution of the system can be obtained from the results for the single pseudorandom chain.
PACS: 71.30.+h – Metal-insulator transitions and other electronic transitions / 72.15.Rn – Localization effects (Anderson or weak localization)
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2005
