Magnetospectroscopy of two-dimensional HgTe-based topological insulators around the critical thickness

M. Zholudev,1,2 F. Teppe,1,* M. Orlita,3 C. Consejo,1 J. Torres,4 N. Dyakonova,1 M. Czapkiewicz,5 J. Wrobel,5 G. Grabecki,5 N. Mikhailov,6 S. Dvoretskii,6 A. Ikonnikov,2 K. Spirin,2 V. Aleshkin,2 V. Gavrilenko,2 and W. Knap1 1Laboratoire Charles Coulomb (L2C), UMR CNRS 5221, GIS-TERALAB, Universite Montpellier II, 34095 Montpellier, France 2Institute for Physics of Microstructures, Russian Academy of Sciences, Nizhny Novgorod, Russia 3Laboratoire National des Champs Magnetiques Intenses, CNRS-UJF-UPS-INSA, 25, avenue des Martyrs, FR-38042 Grenoble, France 4Institut d’Electronique du Sud, UMR 5214 CNRS, Universite Montpellier 2, 34095 Montpellier, France 5Polish Academy of Sciences, Institute of Physics, aleja Lotnikow 32/46, Warszawa 02-668, Poland 6A.V. Rzhanov Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk 630090, Russia (Received 20 June 2012; revised manuscript received 8 September 2012; published 16 November 2012)