A phase change memory may be formed to have a dimension that is sub-lithographic in one embodiment by forming a surface feature over the phase change material, and coating the surface feature with a mask of sub-lithographic dimensions. The horizontal portions of the mask and the surface feature may then...http://www.google.fr/patents/US7259023?utm_source=gb-gplus-shareBrevet US7259023 - Forming phase change memory arrays
