Nonlinear modification of the hybridization interaction due to band polarization in the magnetically ordered state inf1systems

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Abstract
The hybridization between the f level and the band electrons changes the properties of the band states. In a magnetically ordered system, where the ordering results from the hybridization-mediated two-ion interaction, as in the cerium monopnictides, the band density of states at the Fermi level can be changed. This, in turn, can change the two-ion interaction which is mediated by the band, as in the Ruderman-Kittel-Kasuya-Yosida interaction. Such a change depends on the type of magnetic structure. Under certain conditions, this effect can increase the anisotropy favoring moment alignment along the cube-edge direction.