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Journal of Superconductivity and Novel Magnetism

, Volume 20, Issue 2, pp 179–182 | Cite as

Fano-Interference of Decaying States With Continuum in Nanostructures

  • A. M. Satanin
  • Y. S. Joe
Article
  • 64 Downloads

Abstract

A new scenario of quantum interference in open systems when a decaying (quasi-bound) state can interfere with the continuum is investigated. The resonant perturbation theory and numerical methods are applied to treat a scattering problem in an electron waveguide. Specifically, we use the Kapura and Peierls (KP) approach to extract resonances. In the waveguide with two antidots, we observe an interesting phenomenon: the interference between a quasi-bound state of one channel and background states of the other channel. Our results show that the zero of Fano resonance, arising from the interference between the quasi-bound states and the continuum, is generally placed in the complex plane.

Keywords

quantum interference Fano-resonances nanostructures 

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Copyright information

© Springer Science + Business Media, Inc. 2006

Authors and Affiliations

  • A. M. Satanin
    • 1
    • 2
  • Y. S. Joe
    • 1
  1. 1.Center for Computational Nanoscience, Department of Physics and AstronomyBall State UniversityMuncieUSA
  2. 2.Institute for Physics of MicrostructuresNizhny NovgorodRussia

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