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Spin and Orbital Contribution to the Anisotropy of the Magnetic Field Effect on the 4 E(G)‐Level of Mn 2+ in ZnS
Author(s) -
Parrot R.,
Boulanger D.,
Litzenburger B.,
Pohl U. W.,
Gumlich H. E.
Publication year - 1998
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/(sici)1521-3951(199804)206:2<777::aid-pssb777>3.0.co;2-s
Subject(s) - zeeman effect , hamiltonian (control theory) , physics , anisotropy , magnetic field , condensed matter physics , zeeman energy , excitation , magnetic anisotropy , spectral line , atomic physics , chemistry , quantum mechanics , magnetization , mathematics , mathematical optimization
A very precise determination has been made of the contribution of the terms μ B g e H · S and μ B L · H of the Zeeman Hamiltonian to the anisotropy of the magnetic field effect on the 4 E(G)‐level of Mn 2+ in ZnS. First, detailed excitation spectra from Kramers doublets |( 4 E) Γ 6 〉, |( 4 E) Γ 7 〉, and spin quartet |( 4 E) Γ 8 〉 to fundamental Zeeman states |( 6 A 1 ) SM S 〉, have been analyzed up to 5 T for B ∥ [001] and B ∥ [111]. Second, for B = 5 T, T = 2 K, angular variations of transitions |( 4 E) Γ 6 〉, |( 4 E) Γ 7 〉 and |( 4 E) Γ 8 〉 → ( 6 A 1 ) SM S = —5/2〉 have been studied for B rotating around the axis [1‐10]. For all orientations of the magnetic field, the experimental and theoretical energy levels as given by the Hamiltonian μ B g e H · S , differ by at most 0.2 cm —1 . Finally, the very small contribution of the term in μ B H · L has been studied by using an equivalent operator mimicking the second‐order perturbation schemes involving the spin–orbit interaction and the operator L · H .