Strings and interstitials in liquids, glasses and crystalsK. Nordlund1, 2, Y. Ashkenazy2, 3, R. S. Averback2 and A. V. Granato4
1 Accelerator Laboratory, University of Helsinki - P.O. Box 43, FIN-00014, Finland
2 Department of Materials Science and Engineering, University of Illinois Urbana, IL 61801, USA
3 Racah Institute of Physics, Hebrew University of Jerusalem - Jerusalem 91904, Israel
4 Department of Physics, University of Illinois - Urbana, IL 61801, USA
received 23 February 2005; accepted in final form 22 June 2005
published online 27 July 2005
Recent work has shown that atom motion in liquids is not completely homogeneous, but that stringlike cooperative motion can be used to explain several properties of liquids. We now show that with increasing concentration the properties of interstitial atoms in crystalline materials smoothly approach and eventually completely match the properties of the string atoms in liquids. In terms of the interstitialcy theory of liquids and solids, the strings are direct manifestations of interstitials.
64.60.-i - General studies of phase transitions.
61.72.Bb - Theories and models of crystal defects.
61.20.Gy - Theory and models of liquid structure.
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