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Journal of Applied Physics : Crystal structure effect on the ferromagnetic correlations in ZnO with magnetic impurities

By Bo Gu, Nejat Bulut, and Sadamichi Maekawa

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Book Id: WPLBN0002169407
Format Type: PDF eBook :
File Size: Serial Publication
Reproduction Date: 18 November 2008

Title: Journal of Applied Physics : Crystal structure effect on the ferromagnetic correlations in ZnO with magnetic impurities  
Author: Bo Gu, Nejat Bulut, and Sadamichi Maekawa
Volume: Issue : November 2008
Language: English
Subject: Science, Physics, Natural Science
Collections: Periodicals: Journal and Magazine Collection, Journal of Applied Physics Collection
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Publisher: American Institute of Physics

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Nejat Bulut, And Sadamichi Maekaw, B. G. (n.d.). Journal of Applied Physics : Crystal structure effect on the ferromagnetic correlations in ZnO with magnetic impurities. Retrieved from http://worldebooklibrary.com/


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Description: We study the ferromagnetism in the compound (Zn,Mn)O within the Haldane–Anderson impurity model by using the quantum Monte Carlo technique and the tight-binding approximation for determining the host band structure and the impurity-host hybridization. This computational approach allows us to determine how the host crystal structure influences the impurity bound state, which plays an important role in the development of the ferromagnetic (FM) correlations between the impurities. We find that the FM correlations are strongly influenced by the crystal structure. In particular, in p-type (Zn,Mn)O, we observe the development of FM correlations with an extended range at low temperatures for wurtzite and zinc-blende crystal structures. However, for the rocksalt structure, no FM correlations are observed between the impurities. In addition, in n-type ZnO with magnetic impurities, the impurity bound state and FM correlations are not found.

 

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