Heracles is a physics-based compact model for HfO2-based ferroelectric capacitors. It includes thermal models, interface layers and accurately reproduces several device phenomena, such as transient polarization switching and capacitance hysteresis. Heracles consists of a stateful and computationally efficient non-equilibrium thermodynamics description of the device behaviour, allowing for efficient Monte Carlo simulations even in larger analog CMOS circuits. This makes Heracles suitable for Design-Technology Co-Optimization (DTCO) approaches to (analog) compute-in-memory, neuromorphic systems or sensory circuit design.
A Verilog-A implementation that is tested in Cadence Spectre is available, including Monte-Carlo parameters. The parameters were extracted from measurement data by the Department of Electrical Engineering of IIT Bombay, as seen in the article cited below.
If you find Heracles useful in your work, please cite the following source:
@article{fehlings2024heracles,
title={Heracles: A HfO$\mathrm{_2}$ Ferroelectric Capacitor Compact Model for Efficient Circuit Simulations},
author={Luca Fehlings and Md Hanif Ali and Paolo Gibertini and Egidio A. Gallicchio and Udayan Ganguly and Veeresh Deshpande and Erika Covi},
year={2024},
eprint={2410.07791},
archivePrefix={arXiv},
primaryClass={cs.ET},
url={https://arxiv.org/abs/2410.07791},
}