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Terahertz studies of 2D and 3D topological transitions
Acte de colloque   Open Access

Terahertz studies of 2D and 3D topological transitions

M. Marcinkiewicz, Frederic Teppe, Christophe Consejo, Nina Diakonova, Wilfried Desrat, Dominique Coquillat, Sandra Ruffenach, Wojciech Knap, N. N. Mikhailov, S. A. Dvoretskii, …
Journal of physics conference series
19TH INTERNATIONAL CONFERENCE ON ELECTRON DYNAMICS IN SEMICONDUCTORS, OPTOELECTRONICS AND NANOSTRUCTURES (EDISON' 19) (Salamanca, Spain, 2015)
2015
DOI: https://doi.org/10.1088/1742-6596/647/1/012037

Résumé

We report terahertz measurements on bulk HgCdTe crystals at the semiconductor- to-semimetal topological transition and InAs/GaSb inverted band structure quantum well. We show that physical parameters of these narrow gap systems driven in specific topological phases can be efficiently extracted by means of terahertz photoconductivity studies.

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