Lepadatu, S. and Xu, Y.B. (2004) Direct observation of domain wall scattering in patterned Ni80Fe20 and Ni nanowires by current-voltage measurements. Physical Review Letters, 92 (12). pp. 1272011-1272014. ISSN 0031-9007
Abstract
We present measurements of domain wall resistivity, pinned by nanoconstrictions in single layer ferromagnetic wires of Ni80Fe20 and Ni. Unpinning domain walls from the constriction by current-induced switching allows for an unambiguous measurement of their resistivity changes, namely, 1.7% in Ni80Fe20 and 1.82% in Ni and both positive, which supports the theory of spin-dependent impurity scattering. By deriving an empirical relation for the various constriction widths, the large percentage changes of resistivity in ballistic nanocontacts are reproduced, showing a correlation between domain wall magnetoresistance and ballistic magnetoresistance.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | York RAE Import |
Date Deposited: | 25 Feb 2009 15:26 |
Last Modified: | 25 Feb 2009 15:26 |
Published Version: | http://dx.doi.org/10.1103/PhysRevLett.92.127201 |
Status: | Published |
Publisher: | American Physical Society |
Identification Number: | 10.1103/PhysRevLett.92.127201 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:7210 |