High Performance CMOS

Chart Negative Capacitance

                                                            Negative Capacitance

The phenomenon of negative capacitance (NC) in the ferroelectric-dielectric (FE-DE) based gate stack can provide a novel pathway to achieving sub-60 mV/dec sub-threshold swing in Ferroelectric FETs, and therefore improving the energy-latency product of transistors. Experimentally and theoretically, we are exploring multi domain switching dynamics that highlight the possibility of stabilizing negative capacitance without hysteresis and enable ferroelectric field-effect transistor from internal voltage amplification and associated channel charge boost.


  1. Gomez, J., Dutta, S., Ni, K., Smith, J., Grisafe, B., Khan, A. and Datta, S., “Hysteresis-free negative capacitance in the multi- domain scenario for logic applications”, IEEE International Electron Devices Meeting (IEDM), 2019.
  2. Gomez, J., Dutta, S., Ni, K., Grisafe, B., Smith, J., Khan, A. and Datta, S., “Significance of Multi and Few Domain Ferroelectric Switching Dynamics for Steep-Slope Non-Hysteretic Ferroelectric Field Effect Transistor”, 77th Device Research Conference (DRC), 2019.
  3. Gomez, J., Dutta, S., Ni, K., Joshi, S. and Datta, S., “Steep Slope Ferroelectric Field Effect Transistor”, Electron Devices Technology and Manufacturing Conference (EDTM), 2019.

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