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    Universal scaling of magnetoconductance in magnetic nanocontacts (Invited)

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    日付
    2003-05-15
    著者
    Chung, S. H.
    Munoz, M.
    Garcia, N.
    Egelhoff, W. F.
    Gomez, R. D.
    Citation
    S. H. Chung, M. Muñoz, N. García, W. F. Egelhoff, R. D. Gomez, “Universal scaling of magnetoconductance in magnetic nanocontacts”, J. Appl. Phys., 93, (10), 2003, 7939
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    We present results of half-metallic ferromagnets formed by atomic nanocontact of CrO2– CrO2 and CrO2–Ni that show as much as 400% magnetoconductance. Analysis of the magnetoconductance versus conductance data for all materials known to exhibit so-called ballistic magnetoresistance strongly suggests that the magnetoconductance of nanocontacts follows universal scaling. If the maximum magnetoconductance is normalized to unity and the conductance is scaled to the resistivity of the material, then all data points fall into a universal curve that is independent of the contact material and the transport mechanism. The analysis was applied to all available magnetoconductance data of magnetic nanocontacts in the literature, and the results agree with theory that takes into account the spin scattering within a magnetic domain wall.
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    http://hdl.handle.net/1903/8293
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    • Electrical & Computer Engineering Research Works
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    Copyright 2003 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article may be found at http://jap.aip.org/.

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    DRUM is brought to you by the University of Maryland Libraries
    University of Maryland, College Park, MD 20742-7011 (301)314-1328.
    Please send us your comments.
    Web Accessibility