Calculation of longitudinal magnetic fluctuations in iron by a Landau energy and force method
M U Luchini; V Heine; G J McMullan; M U Luchini; Cavendish Lab., Cambridge Univ., UK; V Heine; Cavendish Lab., Cambridge Univ., UK; G J McMullan; Cavendish Lab., Cambridge Univ., UK
Журнал:
Journal of Physics: Condensed Matter
Дата:
1991-11-04
Аннотация:
The concept of a Landau energy is used to calculate the energy of magnetic fluctuations. This is used to obtain fictitious magnetic fields akin to the Hellmann-Feynman forces used in phonon calculations. This generalized force method is applied to the spectrum of longitudinal magnetic fluctuations and specific numerical results are presented for Fe.
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