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A compact nanoscale device emulating the functionality of biological synapses is an essential element for neuromorphic systems. Here we present for the first time a synapse based on a single ferroelectric FET (FeFET) integrated in a 28nm HKMG technology, having hafnium oxide as the ferroelectric and a resistive element in series. The gradual and non-volatile ferroelectric switching is exploited to mimic the synaptic weight. We demonstrate both the spike-timing dependent plasticity (STDP) and the signal transmission and discuss the effect of the spike properties and circuit design on STDP.
Mulaosmanovic et al. (Thu,) studied this question.
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