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- W2023366509 abstract "Metals with large positive magnetoresistance are rare. We demonstrate that antiferromagnetic metallic states, as have been predicted for the double perovskites, are excellent candidates for huge positive magnetoresistance. An applied field suppresses long range antiferromagnetic order leading to a state with short range antiferromagnetic correlations that generate strong electronic scattering. The field induced resistance ratio can be more than tenfold, at moderate field, in a structurally ordered system, and continues to be almost twofold even in systems with upto 25 % antisite disorder. Although our explicit demonstration is in the context of a two dimensional spin-fermion model of the double perovskites, the mechanism we uncover is far more general, complementary to the colossal negative magnetoresistance process, and would operate in other local moment metals that show a field driven suppression of non-ferromagnetic order." @default.
- W2023366509 created "2016-06-24" @default.
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- W2023366509 date "2011-07-05" @default.
- W2023366509 modified "2023-09-27" @default.
- W2023366509 title "Huge Positive Magnetoresistance in Antiferromagnetic Double Perovskite Metals" @default.
- W2023366509 hasPublicationYear "2011" @default.
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