Phys. Rev. B 72, 113415 (2005) [4 pages]Observation of large low-frequency resistance fluctuations in metallic nanowires: Implications on its stabilityReceived 4 April 2005; revised 14 July 2005; published 28 September 2005 We have measured the low frequency (1 mHz⩽f⩽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 (≃1∕f3∕2) arise when the diameter of the wire ≃15 nm and vanish rapidly as the diameter is increased. We argue that Rayleigh-Plateau instability is the likely cause of this excess noise. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.72.113415
DOI:
10.1103/PhysRevB.72.113415
PACS:
68.65.−k, 73.23.−b
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