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Magnetotransport in Co-doped ZnO nanowires.
MedLine Citation:
PMID:  19170557     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Electrical and magnetotransport measurements were performed on individual Co-doped ZnO dilute magnetic semiconductor nanowires. The electron transport studies show that the electron mobility could be as high as 75 cm(2)/(V.s), and we observed positive magnetoresistivity (MR) at low magnetic field and negative MR at higher magnetic field. s-d exchange-induced spin splitting of the conduction band could account for positive MR while suppression of weak localization of impurity centers could account for the negative MR. Lowering the carrier concentration in these nanowires through the application of a gate voltage tends to induce a larger magnitude MR as well as additional fine structure in the MR curves.
Authors:
Wenjie Liang; Benjamin D Yuhas; Peidong Yang
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Nano letters     Volume:  9     ISSN:  1530-6984     ISO Abbreviation:  Nano Lett.     Publication Date:  2009 Feb 
Date Detail:
Created Date:  2009-02-11     Completed Date:  2009-04-06     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101088070     Medline TA:  Nano Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  892-6     Citation Subset:  -    
Affiliation:
Department of Chemistry, University of California, Berkeley, California 94720, USA.
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