Geodesic
Transverse susceptibility and the~$T^{3/2}$ law in the~dynamic spin-fluctuation theory
Teoretičeskaâ i matematičeskaâ fizika, Tome 181 (2014) no. 2, pp. 358-373

Voir la notice de l'article provenant de la source Math-Net.Ru

We obtain explicit expressions for elements of the magnetic susceptibility tensor in the dynamic spin-fluctuation theory. Using an analytic continuation of the Green's functions, we show that the transverse susceptibility has spin-wave poles at low temperatures, yielding the asymptotic $T^{3/2}$ law for magnetization. We derive an explicit expression for the coefficient in the $T^{3/2}$ law based on the multiband Hubbard Hamiltonian and real band structure. We demonstrate the correct low-temperature behavior of magnetization in the example of iron.
Keywords: spin fluctuation, dynamic susceptibility, magnetization, $T^{3/2}$ law, low temperature. 
@article{TMF_2014_181_2_a8,
     author = {N. B. Melnikov and B. I. Reser},
     title = {Transverse susceptibility and the~$T^{3/2}$ law in the~dynamic spin-fluctuation theory},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {358--373},
     publisher = {mathdoc},
     volume = {181},
     number = {2},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2014_181_2_a8/}
}
TY  - JOUR
AU  - N. B. Melnikov
AU  - B. I. Reser
TI  - Transverse susceptibility and the~$T^{3/2}$ law in the~dynamic spin-fluctuation theory
JO  - Teoretičeskaâ i matematičeskaâ fizika
PY  - 2014
SP  - 358
EP  - 373
VL  - 181
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TMF_2014_181_2_a8/
LA  - ru
ID  - TMF_2014_181_2_a8
ER  - 
%0 Journal Article
%A N. B. Melnikov
%A B. I. Reser
%T Transverse susceptibility and the~$T^{3/2}$ law in the~dynamic spin-fluctuation theory
%J Teoretičeskaâ i matematičeskaâ fizika
%D 2014
%P 358-373
%V 181
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TMF_2014_181_2_a8/
%G ru
%F TMF_2014_181_2_a8
N. B. Melnikov; B. I. Reser. Transverse susceptibility and the~$T^{3/2}$ law in the~dynamic spin-fluctuation theory. Teoretičeskaâ i matematičeskaâ fizika, Tome 181 (2014) no. 2, pp. 358-373. http://geodesic.mathdoc.fr/item/TMF_2014_181_2_a8/