Cyclotron resonance in HgTe/CdTe-based heterostructures in high magnetic fields

M. Zholudev (1) , A. Ikonnikov (1) , Frederic Teppe (2) , M. Orlita (3) , K. Maremyanin (1) , K. Spirin (1) , V. Gavrilenko (1) , Wojciech Knap (2) , S. Dvoretskiy (4) , M. Mihailov (4)

1 Institute for Physics of Microstructures of the RAS
2 L2C - Laboratoire Charles Coulomb
3 LNCMI-G - Laboratoire national des champs magnétiques intenses - Grenoble
4 ISP - Rzhanov Institute of Semiconductor Physics

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.

Mots clés: Far-IR magnetospectroscopy; HgTe quantum wells; Cyclotron resonance; HgTe/CdTe heterostructures

Domaines: Science des matériaux [cond-mat.mtrl-sci]; Gaz Quantiques [cond-mat.quant-gas]

M. Zholudev, A. Ikonnikov, Frederic Teppe, M. Orlita, K. Maremyanin, et al.. Cyclotron resonance in HgTe/CdTe-based heterostructures in high magnetic fields. Nanoscale Research Letters, 2012, 7 (1), pp.534. ⟨10.1186/1556-276X-7-534⟩. ⟨hal-00767209⟩