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Influence of ferromagnetically ordered ion spins on a conduction electron

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Physik der kondensierten Materie

Abstract

The shift of the optical absorption edge in ferromagnetic semiconductors is investigated theoretically with a model, in which a conduction electron is coupled by exchange to the ion spins. The effect of long and short range ion correlations on the electron energy is calculated for high temperatures, in the critical region and with the spin wave approximation.

Résumé

Le déplacement du seuil d’absorption optique en semiconducteurs ferromagnétiques est examiné théoriquement à l’aide d’un modèle dans lequel un electron de conduction est couplé par échange aux spins des ions. L’effet de corrélation des spins à longue et courte portée sur l’énergie est calculé pour de hautes températures, dans la region critique et à l’aide de l’approximation d’ondes de spin.

Zusammenfassung

Die Verschiebung der optischen Absorptionskante in ferromagnetischen Halbleitern wird theoretisch mit einem Modell untersucht, in welchem ein Leitungselektron durch Austausch an die Ionenspins gekoppelt ist. Der Effekt der lang- und kurzreichweitigen Ionenkorrelation auf die Elektronenenergie wird für hohe Temperaturen, im kritischen Bereich und mit der Spinwellennäherung berechnet.

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Authors and Affiliations

  1. Seminar für Theoretische Physik ETH, Hochstraße 60, 8044, Zürich

    F. Rys, J. S. Helman & W. Baltensperger

Authors
  1. F. Rys
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  2. J. S. Helman
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  3. W. Baltensperger
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Rys, F., Helman, J.S. & Baltensperger, W. Influence of ferromagnetically ordered ion spins on a conduction electron. Phys kondens Materie 6, 105–125 (1967). https://doi.org/10.1007/BF02422832

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  • DOI: https://doi.org/10.1007/BF02422832

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