ISSN:
1434-6036
Keywords:
PACS. 72.10.Di Scattering by phonons, magnons, and other nonlocalized excitations – 72.25.Ba Spin polarized transport in metals – 75.50.Cc Other ferromagnetic metals and alloys
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
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 * and to T 7/2 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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1140/epjb/e2002-00404-6
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