Conductance and conductance fluctuations of narrow disordered quantum wires

Details Conductance and conductance fluctuations of narrow disordered quantum wires Conductance and conductance fluctuations of narrow disordered quantum wires

1994-05-20

arxiv.org/abs/cond-mat/9405055v1

Physics

Condensed Matter

RevTeX 22 pages, SST/9394/32

Scientific paper

10.1103/PhysRevB.50.11008

In this paper we present and discuss our results for the conductance and conductance fluctuations of narrow quantum wires with two types of disorder: boundary roughness (hard wall confining potential) and islands of strongly scattering impurities within the bulk of the wire. We use a tight--binding Hamiltonian to describe the quantum wire, infinite perfect leads, a two--terminal Landauer--type formula for the conductance, and the recursive single-particle Green's function technique. We find that conductance quantization is easily destroyed by strong scattering. We also find that Anderson localization poses a serious restriction on the high carrier mobility predicted in quantum wires. Conductance fluctuations in narrow quantum wires are not, in general, universal (as in the metallic regime), but can be independent of the wire length over a short range of lengths.

Affiliated with

Also associated with

No associations

Rating

Conductance and conductance fluctuations of narrow disordered quantum wires does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Conductance and conductance fluctuations of narrow disordered quantum wires, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Conductance and conductance fluctuations of narrow disordered quantum wires will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-576018