Negative and positive magnetoresistance manipulation in an electrodeposited nanometer Ni contact

We show that, in a nanometric size stable electrodeposited Ni contact, it is possible to modify the magnetoresistance by applying current pulses and external magnetic fields whereby the same current path is used for detection and modification. We can pass from positive to negative magnetoresistance...

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Bibliographic Details
Published inPhysical review letters Vol. 85; no. 14; p. 3053
Main Authors García, N, Rohrer, H, Saveliev, I G, Zhao, Y W
Format Journal Article
LanguageEnglish
Published United States 02.10.2000
Subjects
Electrochemistry
Magnetics
Nanostructures - chemistry
Nickel - chemistry
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Summary:We show that, in a nanometric size stable electrodeposited Ni contact, it is possible to modify the magnetoresistance by applying current pulses and external magnetic fields whereby the same current path is used for detection and modification. We can pass from positive to negative magnetoresistance with values as large as 25% at room temperature, all in the same contact. We propose that the effect may be due to switching and moving domain walls in the contact region under the combination of current effects and external fields.
ISSN:0031-9007
DOI:10.1103/physrevlett.85.3053