Investigation of multi-level-cell and SET operations on super-lattice phase change memories

被引：15

作者：

Egami, Toru ^{[1
]}

Johguchi, Koh ^{[1
]}

Yamazaki, Senju ^{[1
]}

Takeuchi, Ken ^{[1
]}

机构：

[1] Chuo Univ, Bunkyo Ku, Tokyo 1128551, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2014年 / 53卷 / 04期

基金：

日本学术振兴会;

关键词：

D O I：

10.7567/JJAP.53.04ED02

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

This paper gives the optimum SET pulse with the investigation on SET current delay and the multi-level-cell (MLC) operation for super-lattice phase change memories (SL-PCMs). From the investigation, the voltage, or the electric field triggers RESET/SET transition of SL-PCM. The induced energy is also essential for changing the resistance state. In this paper, the MLC operation is also verified with RESET pulse, 1-step SET pulse and 2-step SET pulse. The measurement results indicate the 2-step SET pulse is the best for the MLC function, which realizes the precise resistance controlling. Additionally, the retention-time is measured to evaluate the reliability of MLC SL-PCM. The features of SL-PCM are not only small RESET/SET current, but also MLC operation and the SL-PCM technology provides a potential for next generation non-volatile memories. (C) 2014 The Japan Society of Applied Physics

引用

页数：8

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