When the lattice enters a conductive regime (Figure : E ≥ 0.05-0.07 V nm -1 at T = 300 K), the transition matrices show that the octahedral and tetrahedral cavities in the FCC lattice start to communicate directly (Figure , bottom: red-to-cyan off-diagonal transition probability ̸ = 0 and converging to ∼ 0.30). This finding demonstrates the emergence of ionic gates, whose opening permits the conduction of CIT ions throughout the FCC lattice.