New developments in superlattice transport: quenching of miniband conduction in high magnetic fields

DC miniband transport is studied in undoped GaAs/Al xGa 1−xAs superlattices at low temperatures and at high magnetic fields applied perpendicular to the tunnel barriers. A strong suppression of miniband conduction is observed under these conditions. We propose a qualitative semi-classical Drude mode...

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Bibliographic Details
Published in:Microelectronic engineering 1999-06, Vol.47 (1), p.65-68
Main Authors: Murphy, H.M., Eaves, L., Nogaret, A., Stoddart, S.T., Main, P.C., Henini, M., Mori, N., Hamaguchi, C., Maude, D.K., Portal, J.-C.
Format: Article
Language:English
Subjects:
Applied sciences
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electrical properties of specific thin films
Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures
Electronics
Exact sciences and technology
Iii-v semiconductors
Microelectronic fabrication (materials and surfaces technology)
Physics
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
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Summary:DC miniband transport is studied in undoped GaAs/Al xGa 1−xAs superlattices at low temperatures and at high magnetic fields applied perpendicular to the tunnel barriers. A strong suppression of miniband conduction is observed under these conditions. We propose a qualitative semi-classical Drude model to explain the observed results.
ISSN:0167-9317
1873-5568
DOI:10.1016/S0167-9317(99)00149-5