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arXiv · 1806.07825

Cyclotron and combined phonon-assisted resonances in double-well heterostructure In$_{0.65}$Ga$_{0.35}$As/In$_{0.52}$Al$_{0.48}$As at megagauss magnetic fields

M. Zybert·M. Marchewka·E. M. Sheregii·P. Pfeffer·W. Zawadzki·D. G. Rickel·J. B. Betts·F. F. Balakirev·M. Gordon·C. H. Mielke
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Abstract

Experiments on resonances of conduction electrons in InGaAs/InAlAs double quantum wells at megagauss magnetic fields in the Faraday geometry are reported. We observe new cyclotron resonances assisted by emission of InAs-like and GaAs-like optic phonons and a combined (cyclotron-spin) resonance assisted by emission of InAs-like phonon. The observations are very well described for three laser frequencies with the use of an eight-band (three level) $\textbf{k}\cdot \textbf{p}$ model, taking into account position- and energy-dependent effective masses and spin g-factors. It is indicated that the new observations are possible due to the application very high magnetic fields.

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M. Zybert, M. Marchewka, E. M. Sheregii, P. Pfeffer, W. Zawadzki, D. G. Rickel, J. B. Betts, F. F. Balakirev, M. Gordon, C. H. Mielke. 2018-09-25. Cyclotron and combined phonon-assisted resonances in double-well heterostructure In$_{0.65}$Ga$_{0.35}$As/In$_{0.52}$Al$_{0.48}$As at megagauss magnetic fields. https://doi.org/10.1103/physrevb.98.245416

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