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Coherent Raman scattering and magneto-optical interband transitions in diluted magnetic IV-VI compounds

Kohärente Ramanstreuung und magnetooptische Interbandübergänge in verdünnten magnetischen IV-VI-Verbindungen
: Röthlein, P.; Pascher, H.; Bauer, G.; Tacke, M.


Semiconductor Science and Technology 5 (1990), No.3S, pp.S147-S150
ISSN: 0268-1242
ISSN: 1361-6641
Journal Article
Fraunhofer IPM ()
band parameter; Bandparameter; IV-VI-Halbleiter; IV-VI semiconductor; magnetic semiconductor; magnetischer Halbleiter; magneto-optic; Magnetooptik; Spin-flip

We performed coherent Raman spectroscopic investigations of spin-flip transitions in PbMnTe and PbEuSe in magnetic fields down to 500 G. In order to find a consistent set of band parameters for the Mitchell-Wallis k x p model, magneto-optical interband absorption measurements were also performed. In the Raman spectrum of PbEuSe with x > 1 % a completely new resonance with high oscillator strength appears. Although the levels involved have not been identified unambiguously up to now, the experimental findings indicate the existence of a magnetic phase transition in PbEuSe which we observed by optical methods.