Fig. 5 Schematic phase diagrams of Ising spin systems and Mott transition systems. Schematic phase diagrams of Ising spin systems and Mott transition systems. (A) Field-temperature phase diagram of a clean Ising spin system. (B) Pressure-temperature phase diagram of a clean Mott transition system. (C) Field-temperature phase diagram of an Ising spin system with randomness. (D) Our proposed pressure-temperature phase diagram of a Mott transition system with randomness. Tetsuaki Itou et al. Sci Adv 2017;3:e1601594 Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).