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Magnon Drops in One‐Dimensional Ferromagnetic Structures
Author(s) -
Mirjanić D. Lj.,
Bundalo Z.,
Tošić B. S.,
Šetrajčić J. P.
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.2221280118
Subject(s) - magnon , gapless playback , ferromagnetism , superfluidity , condensed matter physics , physics , goldstone boson , spectrum (functional analysis) , quantum mechanics , elementary particle
The spectrum of elementary excitations arising in processes of desintegration of magnon drops in one‐dimensional ferromagnetic structures is investigated. A new method of solving the gap equation is used. It is shown that those elementary excitations are gapless. This result is in accordance with Goldstone's theorem. It was also shown that these elementary excitations do not lead to the superfluidity effect.