Weak Localization in Antidot Arrays: Signature of Classical Chaos

Oleg Yevtushenko, Gerd Lütjering, Dieter Weiss, and Klaus Richter
Phys. Rev. Lett. 84, 542 – Published 17 January 2000
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Abstract

We study, experimentally and theoretically, quantum weak localization (WL) corrections to the classical magnetoconductivity of two-dimensional ballistic systems with regular and disordered patterns of dense antidots. We analyze the observed temperature and flux dependences of the WL using different theoretical models for the chaotic dynamics and dephasing rates. The measured resistivity curves, which deviate from those of diffusive systems, reflect chaotic motion and correlations in the classical dynamics of electrons in the antidot landscape. The results support the significance of the Ehrenfest time as a relevant time scale for ballistic WL.

  • Received 6 April 1999

DOI:https://doi.org/10.1103/PhysRevLett.84.542

©2000 American Physical Society

Authors & Affiliations

Oleg Yevtushenko1,2, Gerd Lütjering3,*, Dieter Weiss1,3, and Klaus Richter2

  • 1Universität Regensburg, D-93040, Regensburg, Germany
  • 2Max-Planck-Institut für Physik komplexer Systeme, D-01187, Dresden, Germany
  • 3Max-Planck-Institut für Festkörperforschung, D-70569, Stuttgart, Germany

  • *Present address: Boston Consulting, D-80331, München, Germany.

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Vol. 84, Iss. 3 — 17 January 2000

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