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The exciton model of spin and optical excitations of an antiferrodielectric
Author(s) -
Petrov E. G.
Publication year - 1971
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.2220480136
Subject(s) - spins , exciton , spin (aerodynamics) , physics , condensed matter physics , thermodynamics
The spin and optical (electronic) excitations of an antiferrodielectric (AFD) are considered within the framcwork of the exciton model. The most general case of a noncollinear orientation of the AFD sublattice spins is invcstigated. Similarities and differences of the exciton and Heisenberg models of the AFD spin excitations arc shown and expressions are derived for the interaction energy of the electronic and spin excitations of AFD.