Patent ID: 8097871
Filing Date: 2012-01-17
Classification: H01L,Y10S

Abstract:
1. A memory device comprising: a first electrode having a top surface and an outer surface; a second electrode having a top surface substantially coplanar with the top surface of the first electrode, and having an inner surface surrounding the outer surface of the first electrode, the second electrode comprising a first material at the top surface and a second material underling the first material, the first material having a thermal conductivity less than that of the second material; a phase change memory element extending across an insulating element between the outer surface of the first electrode and the inner surface of the second electrode to contact the top surface of the first electrode and the top surface of the second electrode, the phase change memory element having a width greater than that of the first electrode; and a dielectric element on the phase change memory element, and an electrically conductive element on the dielectric element, the conductive element comprising material having an electrical conductivity greater than that of material of the dielectric element.