Bulk experimental evidence of half-metallic ferromagnetism in doped manganites

Physics – Condensed Matter – Strongly Correlated Electrons

Scientific paper

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4 pages, 4 figures

Scientific paper

10.1103/PhysRevB.63.172411

We report precise measurements and quantitative data analysis on the low-temperature resistivity of several ferromagnetic manganite films. We clearly show that there exists a T^{4.5} term in low-temperature resistivity, and that this term is in quantitative agreement with the quantum theory of two-magnon scattering for half metallic ferromagnets. Our present results provide the first bulk experimental evidence of half-metallic ferromagnetism in doped manganites.

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