Electron transport and cyclotron resonance in (211)-oriented HgTe--CdTe superlattices

Journal Article · Thu Mar 01 04:00:00 EST 1990 · Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (USA)

DOI:https://doi.org/10.1116/1.576945· OSTI ID:6860680

Hoffman, C A; Meyer, J R; Wagner, R J; Bartoli, F J ^[1]; Chu, X; Faurie, J P ^[2]; Ram-Mohan, L R; Xie, H ^[3]

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1. Naval Research Laboratory, Washington, D. C. 20375 (USA)
2. University of Illinois at Chicago, Chicago, Illinois 60680 (USA)
3. Worcester Polytechnic Institute, Worcester, Massachusetts 01609 (USA)

We discuss a magnetotransport and magneto-optical investigation of (211)-oriented HgTe--CdTe superlattices. Measurements were performed on seven {ital n}-type samples with well widths in the range 41--125 A and energy gaps between 0 and 128 meV. Both magnetotransport and magneto-optical results give evidence for an additional electron species besides the superlattice electrons and holes usually observed. We show that although these have quasi-two-dimensional character, their mobilities are quite sensitive to the superlattice well thickness. These findings are interpreted in terms of band bending and charge transfer from the CdTe substrate into the superlattice. We also discuss the first theoretical calculations of the band structure for (211)-oriented HgTe--CdTe heterostructures.

• OSTI ID: 6860680
• Journal Information: Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (USA), Journal Name: Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (USA) Vol. 8:2; ISSN JVTAD; ISSN 0734-2101
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
CADMIUM COMPOUNDS
CADMIUM TELLURIDES
CHALCOGENIDES
CHARGE TRANSPORT
CYCLOTRON RESONANCE
HOLES
MEASURING METHODS
MERCURY COMPOUNDS
MERCURY TELLURIDES
MOBILITY
RESONANCE
SAMPLE PREPARATION
SUPERLATTICES
TELLURIDES
TELLURIUM COMPOUNDS