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Kinematic and Dynamic Interaction Between Elementary Excitations in Ferromagnetics with Spin S = 1/2
Author(s) -
Tošić B. S.,
Žakula R. B.
Publication year - 1968
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19680270219
Subject(s) - magnon , creation and annihilation operators , pauli exclusion principle , hamiltonian (control theory) , ferromagnetism , physics , fermion , fermi gamma ray space telescope , degenerate energy levels , condensed matter physics , quantum mechanics , commutation , dispersion relation , magnetization , spins , annihilation , mathematics , magnetic field , quantum , mathematical optimization , voltage
The magnon creation and annihilation operators satisfying the Pauli commutation relations in a ferromagnetic with spin S = 1/2 are expressed in terms of two various types of Fermi operators. The dispersion laws for fermions are obtained by twofold diagonalization of the Hamiltonian. Furthermore, these dispersion laws are used to calculate numerically the magnetization and specific heat of the magnon system. The present results are compared with those obtained by other methods as well as with experimental results.