Ferromagnetism induced by free carriers in p-type structures of diluted magnetic semiconductors

T. Dietl, J. Cibert, P. Kossacki, D. Ferrand, S. Tatarenko, A. Wasiela, Y. Merle D'Aubigné, F. Matsukura, N. Akiba, H. Ohno

Research output: Contribution to journalConference articlepeer-review

17 Citations (Scopus)

Abstract

An overview is given of studies aiming at elucidation of the dominant effects that control the character of magnetic ordering and the magnitude of carrier-mediated ferromagnetic interactions in various dimensionality structures of diluted magnetic semiconductors. The modulation-doped p-type quantum wells of Cd1-xMnxTe/Cd1-y-z-MgyZnzTe:N as well as epilayers of Zn1-xMnxTe:N and of Ga1-xMnxAs grown at low temperatures are discussed as examples of systems, in which ferromagnetic correlation induced by free carriers is observed. The effect of kp and spin-orbit couplings, notably in heavily doped, strained or reduced-dimensionality systems, is addressed. It is pointed out that disorder and carrier-carrier interactions have a strong influence on the spin-spin interaction, particularly in the vicinity of the metal-to-insulator transition. Outstanding properties of low-dimensional spin systems, resulting from their tendency towards the formation of spin-density waves, are described in the context of the observed peculiar domain structure.

Original languageEnglish
Pages (from-to)967-975
Number of pages9
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume7
Issue number3
DOIs
Publication statusPublished - 2000 May
EventMSS9: The 9th International Conference on Modulated Semiconductor Structures - Fukuoka, Jpn
Duration: 1999 Jul 121999 Jul 16

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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