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Temperature dependences of resistivity and magnetoresistivity for half-metallic ferromagnets

V. Yu. Irkhin·M. I. Katsnelson
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Abstract

Peculiarities of transport properties of three- and two-dimensional half-metallic ferromagnets are investigated, which are connected with the absence of spin-flip scattering processes. The temperature and magnetic field dependences of resistivity in various regimes are calculated. The resistivity is proportional to T^{9/2} for T T*, T* being the crossover temperature for longitudinal scattering processes. The latter scale plays also an important role in magnetoresistance. The contribution of non-quasiparticle (incoherent) states to the transport properties is discussed. It is shown that they can dominate in the temperature dependence of the impurity-induced resistivity and in the tunnel junction conductivity.

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V. Yu. Irkhin, M. I. Katsnelson. 2002-04-12. Temperature dependences of resistivity and magnetoresistivity for half-metallic ferromagnets. https://doi.org/10.1140/epjb%2Fe2002-00404-6

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