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C. Henkel and B. Horovitz
Noise from metallic surfaces: Effects of charge diffusion
Phys. Rev. A 78 (2008) 042902


    We study electromagnetic response functions for metallic surfaces with diffusive carrier transport. The electric field noise at a distance z0 from the surface is evaluated and compared with data from ion chips that show anomalous heating with a noise power decaying as z0-4. We find that a layer of surface charge with strong diffusion can account for the latter result.

[ 0709.1242 ]

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