Abstract
The influence of the concentration of charge carriers on the ferromagnetic phase transition of the semimagnetic semiconductor Pb1-x-ySnyMnxTe for various compositions is reported. A critical density of carriers above which a ferromagnetic transition can take place, is observed. A simple modified Ruderman-Kittel-Kasuya-Yosida mechanism for semiconductors is proposed in which carriers from two valence bands located in different regions of the Brillouin zone contribute and a finite mean free path is implemented. An excellent quantitative agreement with the data is obtained.
Original language | English |
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Pages (from-to) | 9907-9910 |
Number of pages | 4 |
Journal | Physical Review B: Condensed Matter |
Volume | 37 |
Issue number | 16 |
DOIs | |
Publication status | Published - 1988 |