Delta-Interference of Two Friedel Resonances
Mesoscale and Nanoscale Physics
2013-05-29 v1
Abstract
When a single resonator is coupled to a continuous spectrum one obtains a resonance of finite half-width. Such a resonance is known in many fields of physics. The Friedel resonance is an example where a d-impurity is dissolved in a simple metal. If two resonators are coupled to the continuous spectrum the resonances interfere. For identical coupling and frequencies one obtains two effective resonances. The effective coupling of one of them to the continuum can be tuned to zero yielding a delta-like resonance.
Keywords
Cite
@article{arxiv.0912.1049,
title = {Delta-Interference of Two Friedel Resonances},
author = {Gerd Bergmann},
journal= {arXiv preprint arXiv:0912.1049},
year = {2013}
}