A memory device having a memory portion connected in series with a threshold device between. The memory portion stores at least one bit of data based on at least two resistance states. The threshold device is configured to switch from a high resistance state to a low resistance state upon application...http://www.google.com/patents/US7289349?utm_source=gb-gplus-sharePatent US7289349 - Resistance variable memory element with threshold device and method of forming the same
