Superlattice phase change memory including Sb2Te3 layers containing Zr

A superlattice phase change memory capable of increasing a resistance in a low resistance state is provided. The phase change memory includes a first electrode, a second electrode provided on the first electrode, and a phase change memory layer having a superlattice structure between the first elect...

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Hauptverfasser: KINOSHITA MASAHARU, OYANAGI TAKASUMI, TAKAURA NORIKATSU, AKITA KENICHI, TAI MITSUHARU, KITAMURA MASAHITO, MORIKAWA TAKAHIRO
Format: Patent
Sprache:eng
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Zusammenfassung:A superlattice phase change memory capable of increasing a resistance in a low resistance state is provided. The phase change memory includes a first electrode, a second electrode provided on the first electrode, and a phase change memory layer having a superlattice structure between the first electrode and the second electrode, the superlattice structure including to repeatedly formed layers of Sb2Te3 and GeTe. The phase change memory layer having the superlattice structure includes a Sb2Te3 layer containing Zr in contact with the first electrode.