Bidirectional TaO-diode-selected, complementary atom switch (DCAS) for area-efficient, nonvolatile crossbar switch block

For the first time, a novel area-efficient, 12F
²
crossbar switch block featuring a bidirectional TaO diode-selected, complementary atom switch (DCAS) with diagonal programming lines has been proposed. The compact BEOL-diode, having a high current rectification ratio of 1.7×10
²
with J
_max
=0.6MA/cm
²
, enables three-terminal operation of the DCAS, realizing select-transistor-less programming and high off-state disturbance of the crossbar. The developed DCAS is a strong candidate for realizing a nonvolatile and low-power programmable logic.