Effect of electron‐phonon interaction on itinerant electron magnetism (invited)

1984 ◽  
Vol 55 (6) ◽  
pp. 2347-2352 ◽  
Author(s):  
D. J. Kim
Keyword(s):  
Itinerant Electron ◽  
Phonon Interaction ◽  
Electron Phonon Interaction

MAGNETIZATION DEPENDENCE OF PHONON EFFECT ON VOLUME OF AN ITINERANT ELECTRON FERROMAGNET

1993 ◽  
Vol 07 (01n03) ◽  
pp. 695-698
Author(s):  
Masao OSHIMA ◽  
Nobuhiro HAMAGUCHI ◽  
Shinji FUKUMOTO ◽  
D.J. KIM
Keyword(s):  
Numerical Calculation ◽  
Anomalous Behavior ◽  
Itinerant Electron ◽  
Phonon Interaction ◽  
Electronic Density ◽  
Electron Phonon Interaction ◽  
Temperature Dependences ◽  
Magnetization Dependence ◽  
Grüneisen Constant

Volume behavior is often anomalous for T<Tc of an itinerant electron ferromagnet. Recently Kim pointed out that phonons also can be responsible for such anomalous behavior. Further to explore such possible role of phonons, in this paper we carry out a numerical calculation on the temperature dependences of phonon Debye temperature and Grüneisen constant of an itinerant electron ferromagnet by using a model electronic density of states. Our numerical results support our earlier conclusion and demonstrate the importance of taking into account the effect of the electron-phonon interaction in understanding the anomalous volume and elasticity behavior of an itinerant electron ferromagnet.

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