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25 April 2024

» pubmed » pmid12225119

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Monitoring statistical magnetic fluctuations on the nanometer scale
G Bacher ; A A Maksimov ; H Schömig ; V D Kulakovskii ; M K Welsch ; A Forchel ; P S Dorozhkin ; A V Chernenko ; S Lee ; M Dobrowolska ; J K Furdyna ;
Date:	16 Sep 2002
Journal:	Phys Rev Lett, 89 (12), 127201
Abstract:	Statistical fluctuations of the magnetization are measured on the nanometer scale. As the experimental monitor we use the characteristic photoluminescence signal of a single electron-hole pair confined in one magnetic semiconductor quantum dot, which sensitively depends on the alignment of the magnetic ion spins. Quantitative access to statistical magnetic fluctuations is obtained by analyzing the linewidth broadening of the single dot emission. Our all-optical technique allows us to address a magnetic moment of only approximately equal 100 micro(B) and to resolve statistical changes on the order of a few micro(B).
Source:	PubMed, pmid12225119
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