Publications Details
Phase diagram of Coulomb interactions across the metal-insulator transition in Si:B
The evolution of Coulomb interactions across the metal insulator transition (MIT) in a 3D localized conductor was experimentally investigated. The data were used to construct a phase diagram of the macroscopic Coulomb-correlated states as a function of single-particle energy and density. The phase diagrams show the existence of a phase boundary that separates low-energy distinctive metallic or insulating behavior from a higher energy mixed state. The data indicate a diverging screening radius at the critical density, which may signal an interaction-driven thermodynamic state change.