Spin properties of quantum wells with magnetic barriers. I. A kp analysis for structures with normal band ordering

N. Malkova and U. Ekenberg
Phys. Rev. B 66, 155324 – Published 29 October 2002
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Abstract

The electronic band-edge spectrum of magnetic semiconductor quantum wells containing a diluted magnetic semiconductor as one of the constituents is studied within the envelope-function formalism. The effects of Mn d electrons are explicitly included in a kp Hamiltonian which in the first approximation of perturbation theory is shown to be reduced to an effective Kane model. The spd hybridization leads to a spin-splitting effect. The results are applied to the system Cd1xMnxTe/CdTe. The spin-splitting effect is studied as a function of external magnetic field, well width, valence band offset and fraction of the magnetic atoms. The numerical results are in accord with experimental data.

  • Received 4 May 2001

DOI:https://doi.org/10.1103/PhysRevB.66.155324

©2002 American Physical Society

Authors & Affiliations

N. Malkova

  • Institute of Applied Physics, AS of Moldova, 2028 Kishinev, Moldova, and Department of Microelectronics and Information Technology, Royal Institute of Technology, SE-164 40 Kista, Sweden

U. Ekenberg

  • Department of Microelectronics and Information Technology, Royal Institute of Technology, SE-164 40 Kista, Sweden

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Vol. 66, Iss. 15 — 15 October 2002

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