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Effects of Incommensuracy on the Structural and Electrical Properties in PbTe-Bi Superlattice Films

Published online by Cambridge University Press:  26 February 2011

Sung-Chul Shin
Sung-Chul Shin*
Affiliation:
Materials Research Center, Northwestern University, Evanston, IL 60201 Research Laboratories, Eastman Kodak Company, Rochester, NY 14650
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Abstract

We studied the structural and electrical transport properties of incommensurate PbTe-Bi superlattice films. The properties of those samples were noticeably different from those of commensurate samples. For the incommensurate samples, the satellite peaks, in the 9–29 x-ray scans along the [111] growth orientation, became broader and the ratio of satellite intensities to the Bragg intensity became smaller. The resistances of incommensurate samples were about three times larger than those of corresponding commensurate ones. These features are interpreted by an enhancement of the lateral nonuniformity of interfaces in incommensurate samples. The exponential dependence of the resistance on temperature in incommensurate samples was also in contrast to the logarithmic behavior observed in commensurate ones.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 37: Symposium D – Layered Structures, Epitaxy, and Interfaces , 1984 , 425
Copyright
Copyright © Materials Research Society 1985

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References

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