This article is cited in 14 papers

XIV Annual International Workshop ''Nanophysics and Nanoelectronics 2010''

The cyclotron resonance in Heterostructures with the InSb/AlInSb quantum wells

Yu. B. Vasil'ev^a, F. Gouider^b, G. Nachtwei^b, P. D. Buckle<sup>c

a</sup> Ioffe Institute, St. Petersburg
^b Institut für Angewandte Physik, Technische Universitat Braunschweig, D-38106 Braunschweig, Germany
^c QinetiQ Ltd, Malvern WR14 3PS, United Kingdom

Abstract: The absorption of two-dimensional electrons in InSb-based quantum wells in the quantized magnetic fields in the terahertz spectral region are studied. A $p$-Ge-based cyclotron laser was used as the radiation source. The effective mass of carriers at the Fermi level equal to 0.0219$m_0$ ($m_0$ is the mass of a free electron) is determined from the cyclotron resonance spectra. It is shown that the electron spectrum is described by the Kane model in a wide range of magnetic fields. An anomalously pronounced splitting of the cyclotron resonance line not associated with the nonparabolicity of the conduction band of InAs is observed in low magnetic fields, which can be attributed to the effect of the spin-orbit interaction.

Received: 08.04.2010
Accepted: 12.04.2010

 English version: Semiconductors, 2010, 44:11, 1511–1514

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