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Energy Band Structure and Electronic Properties of NiAs Type Compounds. I. Ferromagnetic Manganese Arsenide
Author(s) -
Sandratskii L. M.,
Egorov R. F.,
Berdyshev A. A.
Publication year - 1981
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.2221030207
Subject(s) - condensed matter physics , ferromagnetism , density of states , fermi level , manganese , magnetic moment , electron , electronic band structure , electronic structure , conductivity , spin (aerodynamics) , fermi energy , materials science , chemistry , physics , metallurgy , quantum mechanics , thermodynamics
A first calculation of the electron energy spectrum of ferromagnetic MnAs is made using the Green's function method. A potential model with variable occupation numbers determined from the condition of magnetic moment self‐consistence is employed. Strong hybridization of manganese 3d‐states and arsenic 4p‐states is obtained. In accordance with the experiment the conductivity has metallic character. The spin‐polarisation is shown to affect the electron structure formation considerably. The principal cross‐sections of the Fermi surface are plotted and discussed. The joint density of states and magnetic form factors are calculated and compared with the experiment.