Observation of large low-frequency resistance fluctuations in metallic nanowires: Implications on its stability

Bid, Aveek and Bora, Achyut and Raychaudhuri, AK (2005) Observation of large low-frequency resistance fluctuations in metallic nanowires: Implications on its stability. In: Physical Review B, 72 (11).

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Abstract

We have measured the low frequency (1 mHz \leq f \leq 10 Hz) resistance fluctuations in metallic nanowires (diameter 15 nm to 200 nm) in the temperature range 77 K to 400 K. The nanowires were grown electrochemically in polycarbonate membranes and the measurements were carried out in arrays of nanowires by retaining them in the membrane. A large fluctuation in excess of conventional 1/f noise which peaks beyond a certain temperature was found. The fluctuations with a significant low frequency component (similar or equal to $1/f^{3/2}$) arise when the diameter of the wire similar or equal to 15 nm and vanish rapidly as the diameter is increased. We argue that Rayleigh-Plateau instability is the likely cause of this excess noise.

Item Type:	Journal Article
Additional Information:	Copyright for this article belongs to American Physical Society.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	04 Nov 2005
Last Modified:	19 Sep 2010 04:20
URI:	http://eprints.iisc.ernet.in/id/eprint/3939

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