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. 2015 Aug 28;6:8156. doi: 10.1038/ncomms9156

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(a) Ionic conductivity across the solid to SI phase transition. (b) The MSD of oxygen. The error bars indicate the standard error estimated with three non-overlapping intervals. Error bars smaller than the symbols are not shown in the graph. Notice the sharp change in the MSD in correspondence to the transition from P3₁21 to FCC-SI. By contrast, the transition from P2₁ (0 K) to P2₁/c-SI does not show any signature in the MSD.