Electrical Switching in Thin Film Structures Based on Transition Metal Oxides

Figure 2

S-type current-voltage characteristic (O-C′-A-A′-B-A′-C-C′-O) of a switching device. The O-C′-A branch represents the OFF state, C-A′-B the ON state, and A-A′ and C-C′ the NDR region with a hysteresis; and ( and ) are the threshold and holding voltages (currents), respectively.