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RESISTIVITY DUE TO SPIN-WAVE SCATTERING IN FERROMAGNETIC METALS
Author(s) -
X. L. Lei
Publication year - 1982
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.31.1009
Subject(s) - electrical resistivity and conductivity , condensed matter physics , ferromagnetism , magnetization , materials science , spin wave , magnon , scattering , spin (aerodynamics) , band gap , electron , physics , magnetic field , quantum mechanics , optics , thermodynamics
We have discussed the effect of the split of the energy levels between spin-up and spin-down electrons caused by magnetization on the magnon-induced resistivity in ferromagnetic metals at low temperatures. As a result of such an energy split, the low-temperature magnetic resistivity always declines exponentially with decreasing temperature in the single-hand model, while it may probably be enhanced in certain conditions in the two-band model. The comparison between the low-temperature expression of magnetic resistivity deduced from the single-band model considering the energy-gap in the spin-wave spectrum and the experimental data of Tb and Dy shows agreement not only on temperature dependence of resistivity at low temperatures but on the magnitude of high-temperature magnetic resistivity as well.

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