Select Device Concepts for Crossbar Arrays

Summary

“We discuss the need for select device functionality, to allow many “state‐holding” memory devices to be organized into large arrays while supporting low‐power programming and reliable readout. Such select devices should offer a large ON‐OFF ratio between ultra‐low leakage for half‐ and unselected devices, yet high ON current densities for rapid switching of selected memory devices. Numerous discrete select devices are discussed, as well as ways to allow the memory device itself to provide this functionality.”