Four-electron quantum dot in a magnetic field

M. B. Tavernier, E. Anisimovas, F. M. Peeters, B. Szafran, J. Adamowski, and S. Bednarek
Phys. Rev. B 68, 205305 – Published 12 November 2003
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Abstract

We present a theoretical treatment of four two-dimensional electrons in a harmonic confinement potential in the presence of an external magnetic field using the exact diagonalization approach. The ground state properties and the spin and angular momentum transitions for different electron interaction strengths and magnetic fields are obtained. A magnetic field-confinement strength phase diagram is presented indicating a rich variety of ground states. An interesting feature of this system is the depolarization of spins by application of a magnetic field. The results are compared to several approximate theories.

  • Received 23 June 2003

DOI:https://doi.org/10.1103/PhysRevB.68.205305

©2003 American Physical Society

Authors & Affiliations

M. B. Tavernier1,*, E. Anisimovas1,†, F. M. Peeters1,‡, B. Szafran1,2, J. Adamowski2, and S. Bednarek2

  • 1Departement Natuurkunde, Universiteit Antwerpen (Campus Drie Eiken), B-2610 Antwerpen, Belgium
  • 2Faculty of Physics and Nuclear Techniques, AGH University of Science and Technology, Kraków, Poland

  • *Electronic address: maarten.tavernier@ua.ac.be
  • Electronic address: egidijus@ua.ac.be
  • Electronic address: francois.peeters@ua.ac.be

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Issue

Vol. 68, Iss. 20 — 15 November 2003

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