Electron Transport in Nanogranular Ferromagnets

Details Electron Transport in Nanogranular Ferromagnets Electron Transport in Nanogranular Ferromagnets

2007-04-09

arxiv.org/abs/0704.1167v2

Phys. Rev. Lett. 99, 066602 (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.99.066602

We study electronic transport properties of ferromagnetic nanoparticle arrays and nanodomain materials near the Curie temperature in the limit of weak coupling between the grains. We calculate the conductivity in the Ohmic and non-Ohmic regimes and estimate the magnetoresistance jump in the resistivity at the transition temperature. The results are applicable for many emerging materials, including artificially self-assembled nanoparticle arrays and a certain class of manganites, where localization effects within the clusters can be neglected.

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