Zeitschrift für Physik B Condensed Matter

, Volume 72, Issue 3, pp 365–370 | Cite as

EPR investigations ofS-state impurities with large hyperfine interaction in zinc and cadmium chalcogenides

  • A. Hausmann
  • R. Roll
Article
Received:

Abstract

A complete set of EPR data of paramagneticS-state impurity centers in the sulphur, selenium and tellurium compounds of zinc and cadmium has been given. New results mainly of gallium, thallium and lead have been included as well as former results which have partly been remeasured in order to obtain more precise data. The defects exhibit large hyperfine interaction with the impurity nucleus as well as EPR-resolved superhyperfine interaction with chalcogen and metal neighbours. These interactions decrease with increasing temperature due to coupling with localized vibrations. Formerly unidentified signals have been assigned to arise from associated or distorted centers. Systematic variations of the EPR-parameters with varying host lattice have been discussed in the frame of a phenomenological model making use of quantum defect electronegativity. Thus quantitative agreement of the EPR-parameters with experiment has been obtained.

Keywords

Cadmium Selenium Gallium Thallium Tellurium 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Springer-Verlag 1988

Authors and Affiliations

  • A. Hausmann
    • 1
  • R. Roll
    • 1
  1. 1.2. Physikalisches Institut der RWTH AachenAachenFederal Republic of Germany

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