Fig. 10: Tunable bandgap under applied electric field in perovskite via Jahn–Teller distortion.

Jahn–Teller distortion (top right panel) and bandgaps (bottom right panel) as a function of applied electric field in SrTiO3, BaMnO3, YMnO3, and BiFeO3. The atomic displacements associated with polar and Jahn–Teller distortions are schematically shown on the top and bottom right panels respectively. Reproduced with permission from ref. 151. Copyright [2016] {American Physical Society}.