Fluctuations of Conductance Peak Spacings in the Coulomb Blockade Regime: Role of Electron-Electron Interaction

Ya. M. Blanter, A. D. Mirlin, and B. A. Muzykantskii
Phys. Rev. Lett. 78, 2449 – Published 24 March 1997
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Abstract

We study influence of electron-electron interaction on statistics of Coulomb blockade peak spacings in disordered quantum dots. It is shown that the interaction combined with fluctuations of eigenfunctions of the Fermi sea enhances the peak spacing fluctuations, in accordance with recent experiments. In addition, account of the spin degrees of freedom leads to a pronounced odd-even structure for weak interaction ( e2/εvF); in the opposite case ( e2/εvF) this structure is washed out.

  • Received 30 September 1996

DOI:https://doi.org/10.1103/PhysRevLett.78.2449

©1997 American Physical Society

Authors & Affiliations

Ya. M. Blanter1,2, A. D. Mirlin1,3, and B. A. Muzykantskii4

  • 1Institut für Theorie der Kondensierten Materie, Universität Karlsruhe, 76128 Karlsruhe, Germany
  • 2Department of Theoretical Physics, Moscow Institute for Steel and Alloys, Leninskii Pr. 4, 117936 Moscow, Russia
  • 3Petersburg Nuclear Physics Institute, 188350 Gatchina, St. Petersburg, Russia
  • 4Department of Physics, University of Warwick, CV4 7AL Coventry, United Kingdom

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Vol. 78, Iss. 12 — 24 March 1997

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