Abstract
An important probe of the structure of an amorphous solid is the vibrational density of states, g(ω). If this quantity can be accurately determined experimentally it should then be possible to compare the results with theoretical predictions. In this way inferences as to the structural properties of the disordered material could be made. The interpretation of data obtained from infrared and Raman experiments is complicated by the largely unknown energy dependencies of the relevant matrix elements. Inelastic electron tunnelling is a new technique with which to obtain g(ω) [1,2,3]. The method is inexpensive, simple and uses minute quantities of material.
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