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Mechanism of Interdiffusion in Hg1-XXxTe/CdTe Superlattices (X = Cd, Mn, AND Zn)

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Abstract

The interdiffusion mechanism in Hg(l-x)X(x)Te/CdTe superlattices where X is Cd, Mn, or Zn can be deduced from the magnitude of the interdiffusion activation energy. By comparing in-situ x-ray diffraction measurements (our work) with results from Tang and Stevenson (J. Vac. Sci. Technol. AS, 1987), it is found that anionic and cationic Frenkel pairs represent the most likely interdiffusion mechanism in Hg(l-x)X(x)Te/CdTe superlattices. This model mixes vacancies and interstitials, as well as maintaining the conduction type and the electronic mobility. It is further shown that interdiffusion sets in as soon as the growth starts.

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Author notes

  1. J. L. Staudenmann

    Present address: Howard Hughes Medical Institute, Department of Biochemistry & Molecular Biophysics, Columbia University, 630 West 168th Street, 10032, New York, NY, USA

Authors and Affiliations

  1. Department of Physics, Ames Laboratory-USDOE and Iowa State University, 50011, Ames, Iowa, USA

    J. L. Staudenmann & R. D. Knox

  2. Department of Physics, University of Illinois at Chicago, P.O. Box 4348, 60680, Chicago, Illinois, USA

    J. P. Faurie

Authors
  1. J. L. Staudenmann
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  2. R. D. Knox
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  3. J. P. Faurie
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Staudenmann, J.L., Knox, R.D. & Faurie, J.P. Mechanism of Interdiffusion in Hg1-XXxTe/CdTe Superlattices (X = Cd, Mn, AND Zn). MRS Online Proceedings Library 93, 193–199 (1987). https://doi.org/10.1557/PROC-93-193

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  • DOI: https://doi.org/10.1557/PROC-93-193

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