|Sub-terahertz photoconductivity of Hg x Cd 1− x Te crystals with composition close to semiconductor-to-semimetal topological transition |
Conference: Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on (Tucson, US, 2014-09-14)
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We report on sub-Terahertz photoconductivity of bulk HgxCd1-xTe crystals withcomposition close to semiconductor-to-semimetal topological transition. Low magnetic fieldShubnikov-de Hass like oscillations were observed with a period which does not depend onthe incident frequency. Moreover, anomalous B-periodic oscillations were also observed athigher magnetic fields.