AI Article Synopsis
- Ballistic magnetoresistance shows universal scaling in very small (atomic or nanometer scale) contacts, meaning it behaves similarly regardless of the specific materials used.
- By normalizing the maximum magnetoconductance to one and scaling the conductance with the bulk conductivity, data from multiple sources fit into a tight range.
- The findings support a theoretical model that considers spin-scattering occurring within a magnetic-domain wall.
Article Abstract
We show that ballistic magnetoresistance exhibits universal scaling in atomic or nanometer scale contacts. Plotting the data as conductance, we find that, if the maximum magnetoconductance is normalized to unity and the conductance is scaled with the conductivity of the bulk material, the data fall in a narrow region, independent of the nanocontact materials, for our four data sets and four from the literature. The results agree with a theory that takes into account spin-scattering within a magnetic-domain wall.
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| http://dx.doi.org/10.1103/PhysRevLett.89.287203 | DOI Listing |
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