Terahertz magnetospectroscopy of pseudo-relativistic fermions in HgCdTe alloys under hydrostatic pressure

We report on terahertz (THz) magnetospectroscopy of Hg 1-x Cd x Te (MCT) epitaxial alloys with various cadmium content (from x = 0.15 to x = 0.17). Additionally some magnetospectroscopy investigations were performed as a function of hydrostatic pressure. We show that all experimental data can be per...

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Bibliographic Details
Main Authors: Szola, M., Yavorskiy, D., Lusakowski, J., But, D. B., Ivonyak, Y., Przybytek, J., Yahniuk, I., Mikhailov, N. N., Dvoretsky, S., Cywinski, G., Teppe, F., Krishtopenko, S. S., Knap, W.
Format: Conference Proceeding
Language:English
Subjects:
Cadmium compounds
Epitaxial growth
Graphene
II-VI semiconductor materials
Photonic band gap
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Summary:We report on terahertz (THz) magnetospectroscopy of Hg 1-x Cd x Te (MCT) epitaxial alloys with various cadmium content (from x = 0.15 to x = 0.17). Additionally some magnetospectroscopy investigations were performed as a function of hydrostatic pressure. We show that all experimental data can be perfectly interpreted within the pseudo-relativistic description assuming E g = 2mc 2 where E g is the band gap, m is the fermion rest mass and c is the constant. Remarkably, the experimental results for all the samples are consistently described by using constant velocity c = 1.0*10 6 m/s (close to Fermi velocity in graphene) independent of hydrostatic pressure and Cd content.
ISSN:2162-2035
DOI:10.1109/IRMMW-THz50926.2021.9567639