Dependence of the conductivity noise of metallic oxide interconnects on the oxygen stoichiometry: a study of LaNiO3-delta

Ghosh, Arindam and Raychaudhuri, AK and Sreekala, R and Rajeswari, M and Venkatesan, T (1997) Dependence of the conductivity noise of metallic oxide interconnects on the oxygen stoichiometry: a study of LaNiO3-delta. In: Journal Of Physics D-Applied Physics, 30 (24). L75-L79.

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Abstract

We report measurements of low-frequency conductivity noise over the temperature range 4.2-400 K in epitaxial thin films of LaNiO3-delta which is a potential material for metallic oxide interconnects. The observed spectral power of the noise has a frequency spectrum alpha 1/f(alpha) where 0.7 < alpha < 1.5, and it depends strongly on the temperature as well as on the oxygen stoichiometry, delta. Contrary to expectations, we made the interesting observation that the magnitude of the noise at room temperature does not increase monotonically with the oxygen deficiency delta. Instead it shows a minimum at certain non-zero values of delta unlike the resistivity which is minimum at delta approximate to 0.

Item Type:	Journal Article
Publication:	Journal Of Physics D-Applied Physics
Publisher:	IOP Publishing
Additional Information:	Copyright of this article belongs to IOP Publishing.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	18 Mar 2009 06:37
Last Modified:	19 Sep 2010 05:25
URI:	http://eprints.iisc.ac.in/id/eprint/18836

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