Synapse with versatility based on the Pt /LaMnO3/Pt heterojunction

The realization of highly efficient neuromorphic computing necessitates the development of fast artificial synaptic devices. Mott insulator artificial synapses, in particular, provide tremendous potential for ultrafast neuromorphic devices. In this work, based on Pt/LaMnO3/Pt heterostructures, a variety of synaptic plasticity has been realized, including paired-pulse facilitation/depression, spike rate-dependent plasticity (SRDP) and four types of spike time-dependent plasticity. Furthermore, Bienenstock-Cooper-Munro learning rules with a sliding frequency threshold have been found from SRDP. These findings make a significant contribution to brain-like neuromorphic computing.