Fig. 5: Phase diagram.
From: Glassy dynamics of SrTiO3-based two-dimensional electron gas

The well-known phase diagram with ferroelectric, quantum paraelectric and quantum critical region18 together with an additional axis of carrier doping. This depicts a wide range of quantum phases that emerge upon electron doping in SrTiO3 through heterostructuring. Superconductivity, Rashba SOC and multiferroic 2DEG were reported in refs. 29,30,37 (also see ref. 35).This work presents the evidence of a dipolar glassy metal phase in STO-based 2DEG.