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29 March 2024
 
  » arxiv » nlin.CD/0003013

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Periodic orbit effects on conductance peak heights in a chaotic quantum dot
L. Kaplan ;
Date 6 Mar 2000
Journal Phys. Rev. E 62, 3476 (2000)
Subject Chaotic Dynamics; Mesoscopic Systems and Quantum Hall Effect | nlin.CD cond-mat.mes-hall
AbstractWe study the effects of short-time classical dynamics on the distribution of Coulomb blockade peak heights in a chaotic quantum dot. The location of one or both leads relative to the short unstable orbits, as well as relative to the symmetry lines, can have large effects on the moments and on the head and tail of the conductance distribution. We study these effects analytically as a function of the stability exponent of the orbits involved, and also numerically using the stadium billiard as a model. The predicted behavior is robust, depending only on the short-time behavior of the many-body quantum system, and consequently insensitive to moderate-sized perturbations.
Source arXiv, nlin.CD/0003013
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