  A probabilistic-bit (p-bit) is the fundamental building block in the circuit
network of a stochastic computing, and it could produce a continuous random
bit-stream with tunable probability. Utilizing the stochasticity in few-domain
ferroelectric material(FE), we propose for the first time, the p-bits based on
ferroelectric FET. The stochasticity of the FE p-bits stems from the thermal
noise-induced lattice vibration, which renders dipole fluctuations and is
tunable by an external electric field. The impact of several key FE parameters
on p-bits' stochasticity is evaluated, where the domain properties are revealed
to play crucial roles. Furthermore, the integer factorization based on FE
p-bits circuit network is performed to verify its functionality, and the
accuracy is found to depend on FE p-bits' stochasticity. The proposed FE p-bits
possess the advantages of both extremely low hardware coast and the
compatibility with CMOS-technology, rendering it a promising candidate for
stochastic computing applications.
