Patent ID: 11944022
Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
Field: Computer technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 19:
20. A method for creating a resistive memory structure, the method comprising:
forming one or more openings in a layer comprising a first dielectric material;
filling the one or more openings using a second dielectric material different than the first dielectric material,
wherein the resistive memory structure comprises a memory cell comprising a first electrode and a second electrode arranged on either side of a dielectric layer, the memory cell being capable of reversibly switching between a “high resistance” state and a “low resistance” state,
wherein a dielectric layer, which is the layer comprising the first dielectric material, comprises a switching zone forming a preferred conduction path for the current when the memory cell is in the low resistance state,
wherein the dielectric layer comprises a first region and a second region adjoining one another in such a way as to form an interface between the first and second regions, the first and second region (a) being made of the same dielectric material and having different compositions in terms of doping element(s) or concentration of doping element or (b) being respectively made of a first dielectric material and a second dielectric material having different respective dielectric constants, and
wherein the first electrode and the second electrode are arranged facing the interface between the first region and the second region, the interface extending in a given plane passing through the dielectric layer and passing through the electrodes so as to locate the switching zone at the interface zone.