A Novel Cross-Spacer Phase Change Memory with Ultra-Small Lithography Independent Contact Area

Autor: T.C. Wang, J.T. Yeh, Y.C. Chen, S.H. Chiou, C. Huang, M.J. Kao, W.H. Wang, M.J. Chen, T.H. Yu, L.L. Chein, M.Y. Liu, N.T. Shih, D.S. Chao, M.-J. Tsai, F. Chen, D. Huang, T.C. Hsiao, L.S. Tu, C. Lee, C.W. Chen, R. Yen, W.S. Chen
Rok vydání: 2007
Předmět:
Zdroj: 2007 IEEE International Electron Devices Meeting.
DOI: 10.1109/iedm.2007.4418935
Popis: A cross-spacer phase change memory (PCM) cell with ultra-small lithography-independent contact area for reduced writing current has been successfully demonstrated. By crossing the spacer sidewalls of phase change and heater material, a small contact area of ~1,000 nm2 with 0.23 mA reset current is therefore obtained. The result of a derived 2-bit per cell (Chain) structure is also shown. The cross-spacer cell structure is a potential candidate for PCM with multi-bit per cell in one PC layer.
Databáze: OpenAIRE