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PUBLICATIONS

Artifacts that mimic ballistic magnetoresistance

Published

Author(s)

William F. Egelhoff Jr., L Gan, Erik B. Svedberg, Cedric J. Powell, Alexander J. Shapiro, Robert McMichael, J Mallett, Thomas P. Moffat, Mark D. Stiles

Abstract

We have investigated the circumstances underlying recent reports of very large values of ballistic magnetoresistance (BMR) in nanocontacts between magnetic wires. We find that the geometries used are subject to artifacts due to motion of the wires that distort the nanocontact thereby changing its electrical resistance. Since these nanocontacts are often of atomic scale, reliable experiments would require stability on the atomic scale. No method for achieving such stability in macroscopic wires is apparent. We conclude that macroscopic magnetic wires cannot be used to establish the validity of the BMR effect.
Citation
Journal of Magnetism and Magnetic Materials
Volume
286
Pub Type
Journals

Keywords

artifacts, Ballistic Magnetoresistance, electrodeposition, Ni wires
Nanomagnetics

Citation

Egelhoff Jr., W. , Gan, L. , Svedberg, E. , Powell, C. , Shapiro, A. , McMichael, R. , Mallett, J. , Moffat, T. and Stiles, M. (2004), Artifacts that mimic ballistic magnetoresistance, Journal of Magnetism and Magnetic Materials (Accessed December 26, 2024)

Issues

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Created December 31, 2003, Updated October 12, 2021