Fig. 4: VA maps.
From: Giant voltage amplification from electrostatically induced incipient ferroelectric states
a–c Summary of results for VA in n/m superlattices: (a) m = 3, (b) m = 6 and (c) m = 9. The colour scale represents the voltage ratio \({{{{\mathcal{A}}}}}_{{{{\rm{d}}}}}\). The lines and labels indicate the stability regions of the states of Fig. 2. In the coexistence region we show the \({{{{\mathcal{A}}}}}_{{{{\rm{d}}}}}\) values corresponding to the mono-IP state.
