The theory of magnetic polarons in antiferromagnetic semiconductors | Zendy

Egorov B. V. | Zendy; Timofeev B. B. | Zendy

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The theory of magnetic polarons in antiferromagnetic semiconductors

Author(s) -

Egorov B. V.,

Timofeev B. B.

Publication year - 1983

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.2221190110

Subject(s) - polaron , antiferromagnetism , condensed matter physics , spins , electron , physics , magnon , spin (aerodynamics) , semiconductor , quantum mechanics , ferromagnetism , thermodynamics

The electron states in antiferromagnetic semiconductors with large atomic spins S and an arbitrary relation between the band width Δ E and the spin—electron interaction A are considered. It is shown that in the mean‐field approximation of atomic spins the spin—electron interaction in case of AS ≧ Δ E leads to essential transformations in the electron spectrum, while the interactions of electrons with the spin deviations from the average values (at T = 0 with virtual magnons) leads to a polaron‐type quasi‐particle formation: the antiferromagnetic polaron (AFP). With the help of the diagram technique at T = 0 the AFP Green function and its spectrum are obtained.

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