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Unconventional one-magnon scattering resistivity in half metals

Nobuo Furukawa
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Abstract

Low-temperature resistivity of half-metals is investigated. To date it has been discussed that the one-magnon scattering process in half-metals is irrelevant for low-temperature resistivity, due to the fully spin-polarized electronic structure at the ground state. If one takes into account the non-rigid-band behavior of the minority band due to spin fluctuations at finite temperatures, however, the unconventional one-magnon scattering process is shown to be most relevant and gives T^3 dependence in resistivity. This behavior may be used as a crucial test in the search for half-metallic materials which are potentially important for applications. Comparison with resistivity data of La_1-x Sr_x MnO_3 as candidates for half-metals shows good agreement.

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Nobuo Furukawa. 2000-05-13. Unconventional one-magnon scattering resistivity in half metals. https://doi.org/10.1143/jpsj.69.1954

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