The physics of electron-doped quantum paraelectrics


Abstract: The perovskite material SrTiO3 lies close to a quantum critical point separating ferroelectric and paraelectric phases at zero temperature. The presence of a proximate quantum critical point makes these materials highly tunable via, for example, lattice strains, chemical doping, applied electric fields, and isotope substitution. This tunability extends to electron-doped versions of these materials and raises the possibility of bespoke and tunable electronic devices. In this talk, I will review our theoretical modeling of novel phenomena that may emerge at oxide interfaces involving quantum paraelectrics and show that electron doping adds an additional and interesting axis along which these systems may be tuned.

The seminar will be chaired by Jiří Hlinka, Department of Dielectrics.