Cyclotron resonance in HgTe/CdTe-based heterostructures in high magnetic fields
1 Institute for Physics of Microstructures of the Russian Academy of Sciences, GSP-105, Nizhny Novgorod, 603950, Russia
2 Laboratoire Charles Coulomb (LCC), Universite Montpellier II, Montpellier, 34095, France
3 Laboratoire National des Champs Magnetiques Intenses (LNCMI-G), 25 rue des Martyrs, B.P. 166, Grenoble, 38042, France
4 Institute of Semiconductor Physics, Siberian Branch of the Russian Academy of Sciences, pr. Lavrentieva 13, Novosibirsk, 630090, Russia
Nanoscale Research Letters 2012, 7:534 doi:10.1186/1556-276X-7-534Published: 26 September 2012
Cyclotron resonance study of HgTe/CdTe-based quantum wells with both inverted and normal band structures in quantizing magnetic fields was performed. In semimetallic HgTe quantum wells with inverted band structure, a hole cyclotron resonance line was observed for the first time. In the samples with normal band structure, interband transitions were observed with wide line width due to quantum well width fluctuations. In all samples, impurity-related magnetoabsorption lines were revealed. The obtained results were interpreted within the Kane 8·8 model, the valence band offset of CdTe and HgTe, and the Kane parameter EP being adjusted.