J. Phys. I France
Volume 3, Numéro 7, July 1993
|Page(s)||1515 - 1522|
J. Phys. I France 3 (1993) 1515-1522
Transport properties of a class of deterministic one dimensional models with mobility edgesH. Cruz and S. Das Sarma
Department of Physics, University of Maryland, College Park, Maryland 20742-4111, U.S.A.
(Received 18 March 1993, accepted 26 March 1993)
We calculate, using the Landauer formula, the dc resistance of a class of deterministic one dimensional models with slowly spatially varying potentials which have recently been shown to exhibit metal-insulator transitions. The mobility edge behavior of the model is directly confirmed using a tight-binding as well as a Krönig-Penny model. Effects of temperature and random disorder are included in our calculations. The state at the mobility edge is found to have the intermediate fractal character of critical states associated with singular continuous spectra.
© Les Editions de Physique 1993