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Theory of the Residual Resistivity of Bloch Walls I. Paramagnetic Effects
Author(s) -
Cabrera G. G.,
Falicov L. M.
Publication year - 1974
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220610219
Subject(s) - condensed matter physics , diamagnetism , electrical resistivity and conductivity , residual resistivity , paramagnetism , magnetoresistance , mean free path , ferromagnetism , spins , scattering , electron , fermi level , physics , materials science , magnetic field , superconductivity , quantum mechanics
The contribution of Bloch‐wall electron‐scattering to the electrical resistivity of a ferromagnetic metal is calculated. Calculations are carried out for various cases which include small as well as large exchange splittings. In all cases, spherical Fermi surfaces are considered, the wall width is assumed to be small compared to the intrinsic electron mean‐free‐path and diamagnetic effects are neglected. It is found that the experimental results (large negative magnetoresistance between 0 and 100 G) could be explained, even when diamagnetic effects are not included, if the majority and minority spins have sizeably different density‐of‐states at the Fermi level.