期刊
APPLIED PHYSICS LETTERS
卷 116, 期 11, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.5143631
关键词
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资金
- JSPS KAKENHI [19K04476]
- KIOXIA Corporation
- Grants-in-Aid for Scientific Research [19K04476] Funding Source: KAKEN
A cross-point memory architecture will be adopted to make the most of the suitability of resistance change memories for high integration. To achieve this, the development of a selector device that is connected in series to the memory and helps to remove the sneak path current flowing through unselected and half-selected cells is an urgent requirement. In this Letter, we developed a selector based on a simple sandwiched structure of Pt/CoO/ITO and confirmed the nonpolar threshold resistance switching that does not require the first fire process. The selector showed an excellent performance of a very small dispersion of the threshold voltages and resistance in the OFF state with the relative standard deviations of less than 2% each, as well as the quick transition between the OFF and ON states within 50ns. The scaling law was confirmed in the current, both in the ON and OFF states, I ON and Ith. It llows us to analyze I ON and Ith, based on which we can reduce the area of the device. The current conduction of the Pt/CoO/ITO selector is ruled by the trap-controlled space charge limited current (SCLC), and the threshold switching from ON to OFF states and vice versa is caused by the transition from the trap-unfilled to the trap-filled SCLC and vice versa, respectively.
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