Sub-terahertz photoconductivity of Hg x Cd 1− x Te crystals with composition close to semiconductor-to-semimetal topological transition

Christophe Consejo (1) , Frederic Teppe (1) , Nina Diakonova (1) , Wilfried Desrat (1) , Sandra Ruffenach (1) , Dominique Coquillat (1) , Wojciech Knap (1) , Maksim Zholudev (2) , V. Rumyantsev , V. Gavrilenko (2) , S. Morozov , N. N. Mikhailov (3) , S. A. Dvoretskii (3)

1 L2C - Laboratoire Charles Coulomb
2 Institute for Physics of Microstructures of the RAS
3 A.V. Rzhanov Institute of Semiconductor Physics

We report on sub-Terahertz photoconductivity of bulk HgxCd1-xTe crystals with composition close to semiconductor-to-semimetal topological transition. Low magnetic field Shubnikov-de Hass like oscillations were observed with a period which does not depend on the incident frequency. Moreover, anomalous B-periodic oscillations were also observed at higher magnetic fields.

Domaines: Physique Générale [physics.gen-ph]

Christophe Consejo, Frederic Teppe, Nina Diakonova, Wilfried Desrat, Sandra Ruffenach, et al.. Sub-terahertz photoconductivity of Hg x Cd 1− x Te crystals with composition close to semiconductor-to-semimetal topological transition. Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on, Sep 2014, Tucson, United States. pp.1. ⟨hal-01265668⟩