Correction: Superprotonic conductivity in RbH<sub>2−3<i>y</i></sub>(PO<sub>4</sub>)<sub>1−<i>y</i></sub>: a phosphate deficient analog to cubic CsH<sub>2</sub>PO<sub>4</sub> in the (1 − <i>x</i>)RbH<sub>2</sub>PO<sub>4</sub> − <i>x</i>Rb<sub>2</sub>HPO<sub>4</sub> system
Materials horizons