Noise from metallic surfaces -- effects of charge diffusion

Details Noise from metallic surfaces -- effects of charge diffusion Noise from metallic surfaces -- effects of charge diffusion

2007-09-09

arxiv.org/abs/0709.1242v2

Physics

Quantum Physics

16 pages, 2 figures. Revised version focusing on charge diffusing and anomalous heating

Scientific paper

10.1103/PhysRevA.78.042902

Non-local electrodynamic models are developed for describing metallic
surfaces for a diffusive metal. The electric field noise at a distance z_0 from
the surface is evaluated and compared with data from ion chips that show
anomalous heating with a noise power decaying as z_0^{-4}. We find that high
surface diffusion can account for the latter result.

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