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The theory of autolocalized electron states in ferromagnetic semiconductors at arbitrary relation between the band width and the spin–electron interaction
Author(s) -
Egorov B. V.,
Krivoglaz M. A.
Publication year - 1978
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.2220860243
Subject(s) - condensed matter physics , electron , physics , spin (aerodynamics) , spins , ferromagnetism , semiconductor , adiabatic process , radius , adiabatic theorem , atom (system on chip) , range (aeronautics) , atomic physics , quantum mechanics , materials science , thermodynamics , computer security , computer science , embedded system , composite material
The conduction electron energy is determined in the adiabatic approximation for ferromagnetic semiconductors with large atom spins and an arbitrary relation between the band width Δ E and the spin–electron interaction constant A . The thermodynamical potential of the system is found. The conditions are discussed when it is thermodynamically favourable to form large radius autolocalized electron states (fluctuons) and their characteristics are determined. A consideration is given for the temperature range where the spin‐wave approximation or that one of self‐consistent field are applicable. It is shown that the temperature range of fluctuonic states is the most wide in crystals with large | A |/ kT C and with | A | S and Δ E of the same order.