A note on magnon life-time in itinerant electron ferromagnetic alloys |
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| Authors: | J. Morkowski |
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| Affiliation: | Polish Academy of Sciences, Institute of Molecular Physics, Ferromagnetics Laboratory, 60–179 Poznan, Poland |
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| Abstract: | A model of a binary ferromagnetic alloy A1?cBc is discussed in terms of a single band Hubbard type hamiltonian. It is shown by summing up contribution of single-site scattering to all orders, that the inverse life time of long-wavelength magnons due to disorder scattering is proportional to q5 and, in the limit c ? 1, to the concentration c. |
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