Thomas-Fermi model and ferromagnetic phases of magnetic semiconductor quantum dots

Alexander O. Govorov
Phys. Rev. B 72, 075358 – Published 25 August 2005

Abstract

Many-particle electron states in semiconductor quantum dots with carrier-mediated ferromagnetism are studied theoretically within the self-consistent Boltzmann equation formalism. Depending on the conditions, a quantum dot may contain there phases: partially spin-polarized ferromagnetic, fully spin-polarized ferromagnetic, and paramagnetic phases. The physical properties of many-body ferromagnetic confined systems come from the competing carrier-mediated ferromagnetic and Coulomb interactions. The magnetic phases in gated quantum dots with holes can be controlled by the voltage or via optical methods.

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  • Received 20 April 2005

DOI:https://doi.org/10.1103/PhysRevB.72.075358

©2005 American Physical Society

Authors & Affiliations

Alexander O. Govorov

  • Department of Physics and Astronomy, Condensed Matter and Surface Science Program, Ohio University, Athens, Ohio 45701-2979, USA

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Issue

Vol. 72, Iss. 7 — 15 August 2005

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