Magnetoquantum Oscillations at THz Frequencies in InSb

The ac magnetoconductance of bulk InSb at THz frequencies in high magnetic fields, as measured by the transmission of THz radiation, shows a field-induced transmission, which at high temperatures (≈100  K) is well explained with classical magnetoplasma effects (helicon waves). However, at low temper...

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Bibliographic Details
Published in:Physical review letters 2017-10, Vol.119 (14), p.146603-146603, Article 146603
Main Authors: Gogoi, P, Kamenskyi, D, Arslanov, D D, Jongma, R T, van der Zande, W J, Redlich, B, van der Meer, A F G, Engelkamp, H, Christianen, P C M, Maan, J C
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Language:English
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Summary:The ac magnetoconductance of bulk InSb at THz frequencies in high magnetic fields, as measured by the transmission of THz radiation, shows a field-induced transmission, which at high temperatures (≈100  K) is well explained with classical magnetoplasma effects (helicon waves). However, at low temperatures (4 K), the transmitted radiation intensity shows magnetoquantum oscillations that represent the Shubnikov-de Haas effect at THz frequencies. At frequencies above 0.9 THz, when the radiation period is shorter than the Drude scattering time, an anomalously high transmission is observed in the magnetic quantum limit that can be interpreted as carrier localization at high frequencies.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.119.146603