Imperial College London
Dr Richard Chater

DrRichardChater

Faculty of Engineering, Department of Materials

Instrumentation Research Fellow, Surface Analysis
 
 
 
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Contact

 

+44 (0)20 7594 6740r.chater

 
 
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Location

 

LG62ARoyal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inproceedings{Buckwell:2016:10.1109/NANO.2015.7388645,
author = {Buckwell, M and Montesi, L and Mehonic, A and Kenyon, AJ and Fearn, S and Chater, RJ and McPhail, D},
doi = {10.1109/NANO.2015.7388645},
pages = {489--492},
publisher = {IEEE},
title = {Structural investigation of resistance switching in silicon-rich silica films},
url = {http://dx.doi.org/10.1109/NANO.2015.7388645},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - CPAPER
AB  - Redox-based resistive RAM presents a development in non-volatile data storage, despite an incomplete understanding of switching mechanisms. However, in order to optimize and standardize device behavior it is necessary to have a better understanding of physical processes governing switching. Many oxide dielectrics have been studied in relation to switching, but silicon-based devices in particular offer a high capacity for integration into existing CMOS technologies at low cost. We present analyses of silicon-rich silica films to establish the chemical and structural processes underpinning electronic resistance switching behavior. Atomic force microscopy, x-ray photoelectron spectroscopy and secondary ion mass spectroscopy are used to characterize observed resistance changes. Reduction and structural reconfiguration of the oxide is seen to be concomitant with structural distortions and the appearance of conductive regions in otherwise-insulating material. Crucially, we demonstrate for the first time the correlation between resistance switching and the emission of oxygen from an electrically stressed dielectric film. These results confirm the current model of an oxygen-based mechanism and highlight the inherent limitations imposed by gradual oxygen depletion on device lifetime.
AU  - Buckwell,M
AU  - Montesi,L
AU  - Mehonic,A
AU  - Kenyon,AJ
AU  - Fearn,S
AU  - Chater,RJ
AU  - McPhail,D
DO  - 10.1109/NANO.2015.7388645
EP  - 492
PB  - IEEE
PY  - 2016///
SP  - 489
TI  - Structural investigation of resistance switching in silicon-rich silica films
UR  - http://dx.doi.org/10.1109/NANO.2015.7388645
ER  -
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