Local spin density functional approach to the theory of exchange interactions in ferromagnetic metals and alloys

 A.I.Liechtenstein^aM.I.Katsnelson⁺V.P.Antropov⁺V.A.Gubanov^a

 

 Abstract

Rigorous expressions for the exchange parameters of classical Heisenberg model applied to crystals are obtained using a local spin density functional (LSDF) approach and KKR-Green functions formalism. The spin wave stiffness constant and Curie temperature (T_c) of ferromagnetic metals are obtained without any model assumptions as to the character of exchange interactions. The concentration dependence of T_c for binary ferromagnetic alloys is investigated in the framework of the single-site CPA-theory. The corresponding calculations are carried out for simple metals Fe, Ni and disordered NiPd alloys.

 

https://sci-hub.se/https://doi.org/10.1016/0304-8853(87)90721-9