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Collective Excitations in Charge‐Ordered Systems with Orbital Degeneracy
Author(s) -
Lubimov V. S.,
Mronov V. S.,
Makarov E. F.,
Ionov S. P.
Publication year - 1980
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.2221020121
Subject(s) - degeneracy (biology) , charge (physics) , physics , state (computer science) , quasiparticle , condensed matter physics , spectral line , atomic physics , quantum mechanics , mathematics , superconductivity , bioinformatics , algorithm , biology
The spectra of collective excitations in the charge‐ordered state with orbital degeneracy are considered. It is found that in such systems there are three branches, the energies of which are smaller than that ones of the edges of the corresponding bands. Possible instabilities of the charge‐ordered state are considered.