Mesoscopic to universal crossover of transmission phase of multi-level quantum dots

Details Mesoscopic to universal crossover of transmission phase of multi-level quantum dots Mesoscopic to universal crossover of transmission phase of multi-level quantum dots

2006-09-08

arxiv.org/abs/cond-mat/0609191v3

Phys. Rev. Lett. 98, 186802 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, version accepted for publication in PRL

Scientific paper

10.1103/PhysRevLett.98.186802

Transmission phase \alpha measurements of many-electron quantum dots (small mean level spacing \delta) revealed universal phase lapses by \pi between consecutive resonances. In contrast, for dots with only a few electrons (large \delta), the appearance or not of a phase lapse depends on the dot parameters. We show that a model of a multi-level quantum dot with local Coulomb interactions and arbitrary level-lead couplings reproduces the generic features of the observed behavior. The universal behavior of \alpha for small \delta follows from Fano-type antiresonances of the renormalized single-particle levels.

Affiliated with

Also associated with

No associations

Rating

Mesoscopic to universal crossover of transmission phase of multi-level quantum dots 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 Mesoscopic to universal crossover of transmission phase of multi-level quantum dots, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mesoscopic to universal crossover of transmission phase of multi-level quantum dots will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-111870