Extended Data Fig. 8: Distributions of the centre-of-mass diffusion coefficient DCoM in Na β”-alumina.
From: Defect-driven anomalous transport in fast-ion conducting solid electrolytes
a-d, Absolute values, e-h, rescaled by the standard error at each time lag. (a,e) 230 K, (b,f) 300 K, (c,g) 473 K, (d,h) 600 K. The rescaled distributions (e)-(h) are exponential. Notably, at 230 K, the distribution becomes wider rather than narrower with increasing time lag, suggesting the possibility of further glass-like collective dynamics at long timescales. At 230 K, the ordering of the mobile ions extends across the entire simulation cell within each conduction plane (Supplementary Fig. 2).
