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Solid oxygen takes shape

Oxygen crystallizes into a sequence of structures, starting as an insulator at low pressure and becoming a superconductor at high pressure. The elusive structure of an intermediate phase has now been determined.

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Figure 1: Structures and energies of dense oxygen.


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Militzer, B., Hemley, R. Solid oxygen takes shape. Nature 443, 150–151 (2006).

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