US Patent 6870751 Low-energy writing in cross-point array memory devices

Disclosed are improved cross-point array memory devices. In one embodiment, a memory device comprises a cross-point array of memory cells, each memory cell including a storage element and a current concentrating feature that concentrates current applied to the storage element. In another embodiment, a memory device comprises a cross-point array of memory cells, each memory cell including a storage element having a preprogrammed filament fuse configured to be disabled during a write procedure.