• Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      Switching; chalcogenide glass; bond constraint theory.

    • Abstract


      Electronic switching in amorphous chalcogenide semiconductors has been observed and studied for nearly forty years. Technological exploitation of this phenomenon has most recently emerged in DVD's where GST, a compound of germanium, antimony, and tellurium, is used to store information. We explain how GST behaves as a switch and how X-ray absorption fine structure can be used to unlock the specifics of the switching process. The tool that leads to this deeper understanding is the bond constraint theory. We explain how this theory leads to an explanation of switching and of the behavior and properties of amorphous materials in general. Finally, the prospects for developing GST-related materials into non-volatile memory media that could be the basis for glass computers are discussed.

    • Author Affiliations


      S C Agarwal1 M A Paesler2 D A Baker2 P C Taylor3 G Lucovsky2 A Edwards4

      1. Department of Physics, Indian Institute of Technology, Kanpur 208 016, India
      2. Department of Physics, North Carolina State University, Raleigh, NC 27695-8202, USA
      3. Colorado School of Mines, Golden, CO 80401-1887, USA
      4. Kirtland Air Force Base, Albuquerque, NM, USA
    • Dates

  • Pramana – Journal of Physics | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.