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MeanField Theory of Itinerant Electron Magnetism
Dynamical MeanField Theory of Spin Fluctuations
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adiabatic approximation alloys amplitude of spin antiferromagnetic metals approach atom band structure Brillouin zone calculated correlation function corresponding Curie constant Curie temperature CW law discussed in Chap discussed in Sect dynamical susceptibility effect equation evaluated exchange interaction excitation experimental results expression Fermi surface free energy functional integral given Green's function Hamiltonian Hartree-Fock Hasegawa Heisenberg model HF-RPA impurity insulator Ishikawa Lett long-wavelength low temperatures Magn magnetic metals magnetic susceptibility measurements method MnSi mode-mode coupling molecular field moments Moriya neutron neutron-scattering paramagnetic parameters Phys properties renormalization saddle-point approximation Sc3In scattering SCR theory self-consistent short-range order shown in Fig small q specific heat spin fluctuations spin wave spin wave dispersion Stoner theory temperature dependence term theory of magnetism transition metals wave vector weakly and nearly weakly ferro weakly ferromagnetic limit weakly ferromagnetic metals zone boundary ZrZn2