Patent ID: 7130212

Claim:
A field effect device comprising: a source electrode; a drain electrode spaced laterally apart from the source electrode; a channel formed between the source electrode and the drain electrode; and a gate electrode formed directly on the channel and arranged in a gap between the source electrode and the drain electrode, wherein the channel comprises a switching material reversibly switchable between a first conductivity state and a second conductivity state, the first conductivity state having a conductivity which is lower than a conductivity of the second conductivity state, each of the conductivity states being persistent; wherein the switching material comprises at least one compound selected from the group consisting of chalcogenide, SrTiO 3 , SrZrO 3 , BaSrTiO 3 , Ta 2 O 5 , Ca 2 Nb 2 O 7 , and a material comprising at least one of a perovskite and a perovskite-like crystal structure, the material being doped up to 20% with a dopant.