Nonlinear photo-diffusion in amorphous chalcogenide multilayers

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Abstract

Enhanced intermixing, induced by a laser beam, has been recently observed in amorphous Se/As2S3 and similar multilayers. We report a model, based on the concept of thermal spikes, which can consistently describe experimental observations. The concentration dependence of the light absorption properties causes the photo-stimulated diffusion to be non-linear even when a concentration independent coefficient of thermo-stimulated diffusion is assumed.

Original languageEnglish
Pages (from-to)1210-1215
Number of pages6
JournalDefect and Diffusion Forum
Volume237-240
Issue numberPART 2
Publication statusPublished - Jan 1 2005

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Keywords

  • Amorphous multilayers
  • Interdiffusion
  • Thermal spike

ASJC Scopus subject areas

  • Radiation
  • Materials Science(all)
  • Condensed Matter Physics

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