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Ferroelectrics

Negative capacitance detected

The experimental detection of negative capacitance in ferroelectrics rekindles hopes that the phenomenon could be used to further push the miniaturization of conventional transistors.

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Figure 1: Transient nature of the negative capacitance effect.
Figure 2: Working principle of a negative-capacitance field-effect transistor (NC-FET) with a ferroelectric material as an insulator, and comparison of its transfer characteristics with a conventional FET based on a metal–insulator–semiconductor structure.

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Correspondence to Gustau Catalan, David Jiménez or Alexei Gruverman.

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Catalan, G., Jiménez, D. & Gruverman, A. Negative capacitance detected. Nature Mater 14, 137–139 (2015). https://doi.org/10.1038/nmat4195

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