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Nano Lett. 2008 Feb;8(2):392-7. doi: 10.1021/nl073225h. Epub 2008 Jan 25.

CMOS compatible nanoscale nonvolatile resistance switching memory.

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Department of Electrical Engineering and Computer Science, the University of Michigan, Ann Arbor, Michigan 48109, USA.


We report studies on a nanoscale resistance switching memory structure based on planar silicon that is fully compatible with CMOS technology in terms of both materials and processing techniques employed. These two-terminal resistance switching devices show excellent scaling potential well beyond 10 Gb/cm2 and exhibit high yield (99%), fast programming speed (5 ns), high on/off ratio (10(3)), long endurance (10(6)), retention time (5 months), and multibit capability. These key performance metrics compare favorably with other emerging nonvolatile memory techniques. Furthermore, both diode-like (rectifying) and resistor-like (nonrectifying) behaviors can be obtained in the device switching characteristics in a controlled fashion. These results suggest that the CMOS compatible, nanoscale Si-based resistance switching devices may be well suited for ultrahigh-density memory applications.

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