Invention Application
- Patent Title: PHASE CHANGE MEMORY WITH METASTABLE SET AND RESET STATES
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Application No.: US14533495Application Date: 2014-11-05
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Publication No.: US20160125936A1Publication Date: 2016-05-05
- Inventor: Matthew J. BrightSky , SangBum Kim , Wanki Kim , Chung H. Lam
- Applicant: International Business Machines Corporation
- Main IPC: G11C13/00
- IPC: G11C13/00

Abstract:
A memory device that includes a phase change material. The phase change material is programmable to a metastable set state and metastable reset state. Furthermore, the phase change material includes an initial state with an initial electrical resistance between the set electrical resistance and the reset electrical resistance. The initial state is at a lower potential energy than the set state and the reset state. Thus, the electrical resistance of the phase change material programmed to the set state or the reset state drifts toward the initial electrical resistance over time. The memory device also includes a first electrode electrically coupled to a first area of the phase change material, and a second electrode electrically coupled to a second area of the phase change material.
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