Abstract
AbstractTaking the advantage of the well-established defect chemistry of SrTiO3, acceptor- and donor-doped SrTiO3 single crystals are used as model systems to understand the roles of oxygen vacancies and the Schottky barrier in the resistive switching. More importantly, SrTiO3-based memristive devices are used to emulate the neurological and psychological functions of the brain. The synaptic plasticity is achieved with Ni/Nb-SrTiO3/Ti memristive devices, and the learning and forgetting processes of the brain, together with the resultant explicit and implicit memories, are also realized with the device. Associative learning, a classical learning case of the brain, is systematically demonstrated as well. The emulation of various neurological and psychological functions in a single memristive device simplifies the construction of the artificial neural network and facilitates the advent of the artificial intelligence. In this work, materials science becomes directly related to neurology and psychology.
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