An embodiment includes a system comprising: first, second, third, fourth, fifth, and sixth layers, (a) the second, third, fourth, and fifth layers being between the first and sixth layers, and (b) the fourth layer being between the third and fifth layers; a formation between the first and second layers, the formation including: (a) a material that is non-amorphous; and (b) first and second sidewalls; a capacitor between the second and sixth layers, the capacitor including: (a) the third, fourth, and fifth layers, and (b) an electrode that includes the third layer and an additional electrode that includes the fifth layer; and a switching device between the first and sixth layers; wherein: (a) the first layer includes a metal and the sixth layer includes the metal, and (b) the fourth layer includes a Perovskite material. Other embodiments are addressed herein.