Periodic orbit effects on conductance peak heights in a chaotic quantum dot

Journal Article · Fri Sep 01 04:00:00 EDT 2000 · Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics

DOI:https://doi.org/10.1103/PhysRevE.62.3476· OSTI ID:20217620

Kaplan, L ^[1]

---

1. Department of Physics and Institute for Nuclear Theory, University of Washington, Seattle, Washington 98195 (United States)

We 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 and interactions. (c) 2000 The American Physical Society.

• OSTI ID: 20217620
• Journal Information: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, Journal Name: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics Journal Issue: 3 Vol. 62; ISSN PLEEE8; ISSN 1063-651X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CLASSICAL MECHANICS
ELECTRIC CONDUCTIVITY
SEMICONDUCTOR DEVICES
THEORETICAL DATA
TUNNEL EFFECT