Chalcogenide materials form the basis of CD and DVD technologies. But an identity crisis looms in the wider field: what role do atomic reconfiguration, electronic processes and ionic movement play in these materials?
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Greer, A., Mathur, N. Changing face of the chameleon. Nature 437, 1246–1247 (2005). https://doi.org/10.1038/4371246a
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