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Solution of the Spin‐Hamiltonian with Orthorhombic HF and g‐Tensors (S = 1/2). I. Theory
Author(s) -
Seth V. P.,
Yadav A.,
Bansal R. S.
Publication year - 1985
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.2221320125
Subject(s) - isotropy , perturbation (astronomy) , hamiltonian (control theory) , orthorhombic crystal system , physics , spectral line , mathematical physics , axial symmetry , condensed matter physics , mathematical analysis , mathematics , quantum mechanics , diffraction , mathematical optimization
Using perturbation methods a theory is developed to analyse the ESR spectra characterized by ℋ = β H · g · S + S · A · I for S = 1/2. It is found that the perturbation is zero for isotropic g and A. For axially symmetric g and A, the perturbation term is zero when H is along z axis and for H along any other direction perturbation terms should be added which may be very small. For the general orientation of H an expression for the line position of the allowed transition is given.