Effects of clustering and dimensionality on the magnetic properties of diluted magnetic semiconductors

R. N. Bhatt, Malcolm P. Kennett, Mona Berciu, Adel Kassaian

Research output: Contribution to journalConference articlepeer-review

Abstract

The magnetic properties of films of diluted magnetic semiconductors (DMS) such as (Ga,Mn)As, as well as bulk grown crystals of similar materials, have been found to be extremely sensitive to growth conditions, both in terms of the ferromagnetic transition temperature, and the details of their magnetization curves. We study an impurity band model for carriers in Mn-doped DMS applicable in the low carrier density regime, and discuss the effects of clustering on the magnetic properties of DMS, using both numerical mean field and Monte Carlo simulations. In addition, we study the effects of dimensionality on the transition temperature and other magnetic behaviour, and compare our results with experimental data.

Original languageEnglish (US)
Pages (from-to)227-238
Number of pages12
JournalMaterials Research Society Symposium - Proceedings
Volume794
DOIs
StatePublished - Jan 1 2003
EventSelf-Organized Processes in Semiconductor Heteroepitaxy - Boston, MA, United States
Duration: Dec 1 2003Dec 5 2003

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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