Quantum monte carlo study of anderson magnetic impurities in semiconductors

N. Bulut, Y. Tomoda, K. Tanikawa, S. Takahashi, S. Maekawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We use quantum Monte Carlo simulations to study the electronic properties of Anderson magnetic impurities in a semiconductor host. We find that in a semiconductor the magnetic impurities exhibit ferromagnetic correlations, which can have a much longer range than in a metallic host. In particular, the range is longest when the Fermi level is located between the top of the valence band and the impurity bound state. We study the dependence of the ferromagnetic correlations on the parameters of the Anderson model, and the dimensionality and band structure of the host material. Using the tight-binding approximation for calculating the host band structure and the impurity–host hybridization, we obtain an impurity bound state, which is located at ≈100 meV above the top of the valence band, which is in agreement with the transport measurements on GaAs with dilute Mn impurities.

Original languageEnglish
Title of host publicationAdvances in Nanoscale Magnetism - Proceedings of the International Conference on Nanoscale Magnetism, ICNM 2007
EditorsFaik Mikailov, Bekir Aktas
PublisherSpringer Science and Business Media, LLC
Number of pages21
ISBN (Print)9783540698814
Publication statusPublished - 2009
Externally publishedYes
EventInternational Conference on Nanoscale Magnetism, ICNM 2007 - Istanbul, Turkey
Duration: 2007 Jun 252007 Jun 29

Publication series

NameSpringer Proceedings in Physics
ISSN (Print)0930-8989
ISSN (Electronic)1867-4941


OtherInternational Conference on Nanoscale Magnetism, ICNM 2007

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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