TY - JOUR
T1 - The temperature dependence of the spin wave energy in the itinerant electron model of ferromagnetism
JF - Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences
JO - Proc R Soc Lond A Math Phys Sci
SP - 409
LP - 418
M3 - 10.1098/rspa.1968.0026
VL - 302
IS - 1470
AU -
AU -
Y1 - 1968/01/09
UR - http://rspa.royalsocietypublishing.org/content/302/1470/409.abstract
N2 - The long wavelength non-interacting spin wave energy for metals at low temperatures is expressed as ћωq = Dq2 = (D0 + D1T2) q2. The dependence of the coefficient D1 on the density of states function, the number of electrons per atom, n, and the effective short range interaction energy, I, is discussed. The variation of D with T2 comes from the change with temperature of the relative occupation ζ and the chemical potentials of the ± spin sub-bands as well as from the direct asymptotic expansion of the Fermi distribution functions occurring in the expression for D.
ER -