Properties and Neuromorphic Applications of Co/Nb:STO based Memristors

Gómez Lorenzo, Jacobo (2025) Properties and Neuromorphic Applications of Co/Nb:STO based Memristors. Bachelor's Thesis, Physics.

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Abstract

Neuromorphic computing aims to fabricate memory devices capable of mimicking the structure of neurons and synaptic connections in the brain. This approach allows for the co-localization of memory and information processing functionalities, overcoming the efficiency limitations of traditional computing associated with the von Neumann bottleneck and the slowdown of Moore’s Law. The objective of this research was to fabricate and study the electrical properties of Cobalt and Niobium-doped Strontium Titanate (Co/Nb:SrTiO3) junctions with interface-based memristive properties, and to discuss their role as embedded-memory systems in the context of neuromorphic computing. To this end, the devices were fabricated using electron beam lithography techniques and electrically characterized using the Keysight B1500A Semiconductor Device Analyze. The results show that the fabricated Co/Nb:SrTiO3 devices exhibit low device-to-device variation, the ability to enhance their capabilities when miniaturized, non-binary memory states, and the capacity to modulate their conductance through current potentiation and depression. All these conditions are highly beneficial for neuromorphic applications and the development of biological sensors. However, certain limitations related to response speed and destructive readout of states require further investigation.

Item Type:	Thesis (Bachelor's Thesis)
Supervisor name:	Banerjee, T.
Degree programme:	Physics
Thesis type:	Bachelor's Thesis
Language:	English
Date Deposited:	07 Jul 2025 11:52
Last Modified:	07 Jul 2025 11:52
URI:	https://fse.studenttheses.ub.rug.nl/id/eprint/35843

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