Influence of the Cu-Te composition and microstructure on the resistive switching of Cu-Te/Al2O3/Si cells

被引:94
作者
Goux, L. [1 ]
Opsomer, K. [1 ]
Degraeve, R. [1 ]
Muller, R. [1 ]
Detavernier, C. [2 ]
Wouters, D. J. [1 ]
Jurczak, M. [1 ]
Altimime, L. [1 ]
Kittl, J. A. [1 ]
机构
[1] IMEC, B-3001 Louvain, Belgium
[2] Univ Ghent, B-9000 Ghent, Belgium
关键词
D O I
10.1063/1.3621835
中图分类号
O59 [应用物理学];
学科分类号
摘要
In this letter, we explore the influence of the CuxTe1-x layer composition (0.2 < x < 0.8) on the resistive switching of CuxTe1-x/Al2O3/Si cells. While x > 0.7 leads to large reset power, similar to pure-Cu electrodes, x < 0.3 results in volatile forming properties. The intermediate range 0.5< x < 0.7 shows optimum memory properties, featuring improved control of filament programming using <5 mu A as well as state stability at 85 degrees C. The composition-dependent programming control and filament stability are closely associated with the phases in the CuxTe1-x layer and are explained as related to the chemical affinity between Cu and Te. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3621835]
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页数:3
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