Cyclotron Resonance of Itinerant Holes in Ferromagnetic InMnAs/GaSb Heterostructures

Details Cyclotron Resonance of Itinerant Holes in Ferromagnetic InMnAs/GaSb Heterostructures Cyclotron Resonance of Itinerant Holes in Ferromagnetic InMnAs/GaSb Heterostructures

2002-07-19

arxiv.org/abs/cond-mat/0207485v1

Physics

Condensed Matter

Materials Science

3 figures. Proceedings of the 26th International Conference on the Physics of Semiconductors

Scientific paper

We report the first observation of hole cyclotron resonance (CR) in ferromagnetic InMnAs/GaSb heterostructures both in the high-temperature paramagnetic phase and the low-temperature ferromagnetic phase. We clearly resolve two resonances that exhibit strong temperature dependence in position, linewidth, and intensity. We attribute the two resonances to the so-called fundamental CR transitions expected for delocalized holes in the valence band in the magnetic quantum limit, demonstrating the existence of $p$-like itinerant holes that are describable within the Luttinger-Kohn effective mass theory.

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