Giant magnetoresistance in nanoscale ferromagnetic heterocontacts

Artur Useinov, R. G. Deminov, L. R. Tagirov, G. Pan*

*此作品的通信作者

研究成果: Article同行評審

14 引文 斯高帕斯(Scopus)

摘要

A quasi-classical theory of giant magnetoresistance (GMR) in nanoscale point contacts between different ferromagnetic metals is developed. The contacts were sorted by three types of mutual positions of the conduction spin-subband bottoms which are shifted one against another by the exchange interaction. A model of a linear domain wall has been used to account for the finite contact length. The magnetoresistance is plotted against the size of the nanocontact. In heterocontacts the magnetoresistance effect not only turns out to be negative, as usual, but it can be positive as well. The relevance of the results to existing experiments on GMR in point heterocontacts is discussed.

原文English
文章編號196215
頁數10
期刊Journal of Physics Condensed Matter
19
發行號19
DOIs
出版狀態Published - 16 5月 2007

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