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Jahn-Teller Model of Cr2+:GaAs

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Semi-Insulating III–V Materials

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Abstract

A dynamic Jahn-Teller model of Cr2+ centres in GaAs is developed as a basis for understanding the acoustic paramagnetic resonance (APR) spectrum. It is shown that first and second order spin-orbit coupling together produce two triplets and a singlet as the ground states of the system separate by a few cm-1. APR transitions are allowed between many of the Zeeman-split levels. The possibility of trigonal crystal fields is also considered and is consistent with some of the experimental data. The centres responsible for the APR spectrum appear to be very different from those seen by electron paramagnetic resonance.

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Author information

Authors and Affiliations

  1. Department of Physics, University of Nottingham, Nottingham, NG7 2RD, UK

    C. A. Bates, A. S. Abhvani & S. P. Austen

Authors
  1. C. A. Bates
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  2. A. S. Abhvani
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  3. S. P. Austen
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Editor information

Editors and Affiliations

  1. Plessey Research (Caswell) Ltd, UK

    G. J. Rees

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© 1980 C.A. Bates, A.S. Abhvani and S.P. Austen

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Bates, C.A., Abhvani, A.S., Austen, S.P. (1980). Jahn-Teller Model of Cr2+:GaAs. In: Rees, G.J. (eds) Semi-Insulating III–V Materials. Birkhäuser Boston. https://doi.org/10.1007/978-1-4684-9193-7_34

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  • DOI: https://doi.org/10.1007/978-1-4684-9193-7_34

  • Publisher Name: Birkhäuser Boston

  • Print ISBN: 978-1-4684-9195-1

  • Online ISBN: 978-1-4684-9193-7

  • eBook Packages: Springer Book Archive

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