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Phys. Rev. B 65, 165313 (2002) [9 pages]

Localized states in two-dimensional semiconductors doped with magnetic impurities in a quantizing magnetic field

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P. Dahan1, V. Fleurov2, K. Kikoin3, and I. D. Vagner4,5,6
1P.E.R.I. Physics and Engineering Research Institute, Ruppin Academic Center, Emek-Hefer 40250, Israel
2Beverly and Raymond Sackler Faculty of Exact Sciences, School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978, Israel
3Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
4Grenoble High Magnetic Field Laboratory (CNRS-MPI, FKF), 166X, F-38042, Grenoble, Cedex 9, France
5Department of Communication Engineering, Holon Academic Institute of Technology, POB 305, Holon 58102 Israel
6Department of Physics, Clarkson University, Potsdam, New York 13699

Received 18 June 2001; published 5 April 2002

A theory of magnetic impurities in a two-dimensional electron gas quantized by a strong magnetic field is formulated in terms of Friedel-Anderson theory of resonance impurity scattering. It is shown that this scattering results in an appearance of bound Landau states with zero angular moment between the Landau subbands. The resonance scattering is spin selective, and it results in a strong spin polarization of Landau states, as well as in a noticeable magnetic field dependence of the g factor and the crystal field splitting of the impurity d levels.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.65.165313
DOI:
10.1103/PhysRevB.65.165313
PACS:
73.21.-b, 71.70.-d, 71.55.-i
 
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