PT-Symmetric Terahertz Photoconductivity in Hg1-xCdxTe

We show that the terahertz photoconductivity in Hg 1-x Cd x Te-based films with the inversed band structure corresponding to the topological phase is asymmetric in magnetic field which may be considered as a T-symmetry breaking. Beside that, the photoconductivity is asymmetric for two mirror-symmetr...

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Published in2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) pp. 1 - 2
Main Authors Kazakov, Aleksei S., Khokhlov, Dmitry R., Galeeva, Alexandra V., Artamkin, Aleksei I., Ryabova, Ludmila I., Dvoretsky, Sergey A., Mikhailov, Nikolai N., Bannikov, Mikhail I., Danilov, Sergey N., Ganichev, Sergey D.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2019
Subjects
Free electron lasers
Magnetic fields
Photoconductivity
Probes
Temperature measurement
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Summary:We show that the terahertz photoconductivity in Hg 1-x Cd x Te-based films with the inversed band structure corresponding to the topological phase is asymmetric in magnetic field which may be considered as a T-symmetry breaking. Beside that, the photoconductivity is asymmetric for two mirror-symmetric pairs of potential probes which may be treated as a P-symmetry breaking. At the same time, the photoconductivity remains intact upon simultaneous swapping of both magnetic field and potential probe couple revealing thus the PT-symmetry.
ISSN:2162-2035
DOI:10.1109/IRMMW-THz.2019.8873775