Quantum Theory of Magnetism |
Contents
THE MAGNETIC SUSCEPTIBILITY | 1 |
THE MAGNETIC HAMILTONIAN | 28 |
THE STATIC SUSCEPTIBILITY OF NONINTERACTING | 64 |
Copyright | |
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antiferromagnetic applied field approximation assume average axis band becomes Bohr magnetons Chap characterized components compute contribution correlation function Coulomb interaction cross section crystal field defined density density matrix diamagnetic distribution effect eigenfunctions eigenvalues energy example exchange interaction excitation external field Fermi surface ferromagnetic Fourier transform frequency Green's function H₁ ħ² Hartree-Fock impurity integral ionic ions Landau lattice Let us consider M₁ M₂ magnetic field magnetic system magnon matrix elements metals Mn2+ modes n₁ neutron noninteracting nuclear obtain operator orbital P₁ paramagnetic particles Pauli susceptibility perturbation phonons Phys potential quantum number quasi-particle R₁ relaxation resonance response result S₂(q scattering Schrödinger equation second quantize shown in Fig spectrum spin configuration spin-wave static susceptibility symmetry temperature dependence term in Eq theorem theory total number unit cell vector Vleck wavefunction wavevector Zeeman Σ Σ