Conduction electron spin density oscillations

The Fe-Mn alloys (2-8-6-7 at. % Mn) have many similarities to the Fe-Al system [36], with the exception that the conduction-electron spin-density oscillations show a phase variation with concentration corresponding to a change in the Fermi radius and band structure (see Figs. 11.5 and 11.6) [32]. In this case the Mn atoms are contributing to the.magnetic structure. 

The magnetic interaction between the ions in the magnetic metals for example, can then be considered as carried by the conduction electrons in the well known Rudermann-Kittel-Kasuya-Yoshida (1 ) interaction. The physical origin of this interaction is a point like polarization of the conduction electrons (CE), at the atomic sites, by the magnetic moments of the f electrons, resulting in an oscillation of the spin density of the CE. The point like approximation is useful because the maxima of the f wave functions are found well inside the atomic core, in radii smaller than 0.7 atomic units. This polarization is carried from ion to ion by the generated polarization oscillation of the conduction electron spins, which has a wave length = 27r/e (C =... 

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