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To the theory of two‐magnon absorption of light by surface collective excitations in the singlet–triplet ferromagnets
Author(s) -
Seidov Yu. M.,
Suleimanov A. M.
Publication year - 1987
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.2221400116
Subject(s) - singlet state , ferromagnetism , magnon , condensed matter physics , absorption (acoustics) , physics , materials science , atomic physics , excited state , optics
By the multi‐time Green's function method the light absorption by surface excitations in the singlet–triplet ferromagnets is investigated using the pseudospin formalism. The possibility of two‐magnon absorption of light on the surface of the singlet‐triplet ferromagnets is shown. It is estimated that the absorption of light by the surface of singlet–triplet ferromagnets is due to the simultaneous emission of two surface magnons in different branches of the spectrum of the singlet–triplet ferromagnets.