Resistive Switching Analysis In Titanium Oxide-Based Memristors Including Surface Scanning Thermal Microscopy


A technical paper titled “Thermal Compact Modeling and Resistive Switching Analysis in Titanium Oxide-Based Memristors” was published by researchers at Universidad de Granada, Leibniz-Institut für innovative Mikroelektronik, Universidad Politécnicade Madrid, University of Twente, King Abdullah University of Science and Technology (KAUST), and Universitat de Barcelona.


“Resistive switching devices based on the Au/Ti/TiO2/Au stack were developed. In addition to standard electrical characterization by means of IV curves, scanning thermal microscopy was employed to localize the hot spots on the top device surface (linked to conductive nanofilaments, CNFs) and perform in-operando tracking of temperature in such spots. In this way, electrical and thermal responses can be simultaneously recorded and related to each other. In a complementary way, a model for device simulation (based on COMSOL Multiphysics) was implemented in order to link the measured temperature to simulated device temperature maps. The data obtained were employed to calculate the thermal resistance to be used in compact models, such as the Stanford model, for circuit simulation. The thermal resistance extraction technique presented in this work is based on electrical and thermal measurements instead of being indirectly supported by a single fitting of the electrical response (using just IV curves), as usual. Besides, the set and reset voltages were calculated from the complete IV curve resistive switching series through different automatic numerical methods to assess the device variability. The series resistance was also obtained from experimental measurements, whose value is also incorporated into a compact model enhanced version.”

Find the technical paper here. Published February 2024.

Roldán, Juan B., Antonio Cantudo, David Maldonado, Cristina Aguilera-Pedregosa, Enrique Moreno, Timm Swoboda, Francisco Jiménez-Molinos et al. “Thermal Compact Modeling and Resistive Switching Analysis in Titanium Oxide-Based Memristors.” ACS Applied Electronic Materials (2024).

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