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Vibrations in interaction with impurities

  • Robert Englman
Conference paper
Part of the Structure and Bonding book series (STRUCTURE, volume 43)

Abstract

A review is presented of the effects of interaction between electronic states on an impurity ion or molecule and the vibrations of the host. Primarily, interactions linear in the vibrational amplitude are treated for their static and time-dependent effects, while mass or force-constant defects are considered only to the extent of bringing out the analogies and distinctions between them and linear interactions. Some emphasis is placed on degenerate impurity states and on the phase-correlation in the electronic and vibrational motions. We describe in some detail experimental and theoretical works which throw light on the character of the vibrational motion that is in interaction with impurity electrons. We conclude that this can vary with circumstances, between extremely localised, molecular type and extended, phonon-like behaviours, where large energy exchange (as e.g. optical) phenomena belong to the former and small energy exchange or scattering experiments to the latter.

Keywords

Electron Paramagnetic Resonance Resonance Mode Vibrational Level Impurity Centre Vibrational Excitation 
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 1981

Authors and Affiliations

  • Robert Englman
    • 1
  1. 1.Soreq Nuclear Research CentreIsrael Atomic Energy CommissionYavnehIsrael

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