Synaptic plasticity and oscillation at zinc tin oxide/silver oxide interfaces

Murdoch, B, McCulloch, D and Partridge, J 2017, 'Synaptic plasticity and oscillation at zinc tin oxide/silver oxide interfaces', Journal of Applied Physics, vol. 121, no. 5, 054104, pp. 1-6.


Document type: Journal Article
Collection: Journal Articles

Title Synaptic plasticity and oscillation at zinc tin oxide/silver oxide interfaces
Author(s) Murdoch, B
McCulloch, D
Partridge, J
Year 2017
Journal name Journal of Applied Physics
Volume number 121
Issue number 5
Article Number 054104
Start page 1
End page 6
Total pages 6
Publisher A I P Publishing LLC
Abstract Short-term plasticity, long-term potentiation, and pulse interval dependent plasticity learning/memory functions have been observed in junctions between amorphous zinc-tin-oxide and silver-oxide. The same junctions exhibited current-controlled negative differential resistance and when connected in an appropriate circuit, they behaved as relaxation oscillators. These oscillators produced voltage pulses suitable for device programming. Transmission electron microscopy, energy dispersive X-ray spectroscopy, and electrical measurements suggest that the characteristics of these junctions arise from Ag + /O - electromigration across a highly resistive interface layer. With memory/learning functions and programming spikes provided in a single device structure, arrays of similar devices could be used to form transistor-free neuromorphic circuits.
Subject Mathematical Sciences not elsewhere classified
DOI - identifier 10.1063/1.4975412
ISSN 0021-8979
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