Unconventional one-magnon scattering resistivity in half metals
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.
Keywords
Cite
@article{arxiv.cond-mat/9907363,
title = {Unconventional one-magnon scattering resistivity in half metals},
author = {Nobuo Furukawa},
journal= {arXiv preprint arXiv:cond-mat/9907363},
year = {2009}
}
Comments
4 pages, including 5 eps figures. To be published in J. Phys. Soc. Jpn. vol. 69 No. 7 (2000)