Hall of Mirrors Scattering from an Impurity in a Quantum Wire

Details Hall of Mirrors Scattering from an Impurity in a Quantum Wire Hall of Mirrors Scattering from an Impurity in a Quantum Wire

2005-11-15

arxiv.org/abs/quant-ph/0511137v3

Phys. Rev. B 73, 115331 (2006)

Physics

Quantum Physics

19 pages, 8 figures. Accepted for publication in Physical Review B. Minor additions to text, added references

Scientific paper

10.1103/PhysRevB.73.115331

This paper develops a scattering theory to examine how point impurities affect transport through quantum wires. While some of our new results apply specifically to hard-walled wires, others--for example, an effective optical theorem for two-dimensional waveguides--are more general. We apply the method of images to the hard-walled guide, explicitly showing how scattering from an impurity affects the wire's conductance. We express the effective cross section of a confined scatterer entirely in terms of the empty waveguide's Green's function, suggesting a way in which to use semiclassical methods to understand transport properties of smooth wires. In addition to predicting some new phenomena, our approach provides a simple physical picture for previously observed effects such as conductance dips and confinement-induced resonances.

Affiliated with

Also associated with

No associations

Rating

Hall of Mirrors Scattering from an Impurity in a Quantum Wire 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 Hall of Mirrors Scattering from an Impurity in a Quantum Wire, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hall of Mirrors Scattering from an Impurity in a Quantum Wire will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-7875