Effects of Spin and Exchange Interaction on the Coulomb-Blockade Peak Statistics in Quantum Dots

Y. Alhassid and T. Rupp
Phys. Rev. Lett. 91, 056801 – Published 30 July 2003

Abstract

We derive a closed expression for the linear conductance through a quantum dot in the Coulomb-blockade regime in the presence of a constant exchange interaction. With this expression we calculate the temperature dependence of the conductance peak-height and peak-spacing statistics in chaotic quantum dots. Using a realistic value of the exchange interaction, we find significantly better agreement with experimental data as compared with the statistics obtained in the absence of exchange.

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  • Received 9 December 2002

DOI:https://doi.org/10.1103/PhysRevLett.91.056801

©2003 American Physical Society

Authors & Affiliations

Y. Alhassid and T. Rupp

  • Center for Theoretical Physics, Sloane Physics Laboratory, Yale University, New Haven, Connecticut 06520, USA

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Vol. 91, Iss. 5 — 1 August 2003

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