Patent ID: 8410540

Claim:
A non-volatile memory device comprising: a stacked structure including a memory portion, and an electrode stacked with the memory portion and having a surface having a portion facing the memory portion; and a voltage application portion configured to apply a voltage to the memory portion to cause a change in a resistance in the memory portion to store information, the surface including: a first region containing a first nonmetallic element and at least one element of a metallic element, Si, Ga, and As, the first region being conductive; and a second region containing a second nonmetallic element and the at least one element of a metallic element, Si, Ga, and As, the second region having a content ratio of the second nonmetallic element higher than a content ratio of the first nonmetallic element in the first region, a difference in electronegativity between the second nonmetallic element and the at least one element of a metallic element, Si, Ga, and As being greater than a difference in electronegativity between the first nonmetallic element and the at least one element of a metallic element, Si, Ga, and As, and at least one of the first region and the second region having an anisotropic shape on the surface.