Magnetic near fields as a probe of charge transport in spatially dispersive conductors

@article{Haakh2012MagneticNF,
  title={Magnetic near fields as a probe of charge transport in spatially dispersive conductors},
  author={Harald R. Haakh and Carsten Henkel},
  journal={The European Physical Journal B},
  year={2012},
  volume={85},
  pages={1-12}
}
Abstract We calculate magnetic field fluctuations above a conductor with a nonlocal response (spatial dispersion) and consider a large range of distances. The cross-over from ballistic to diffusive charge transport leads to a reduced noise spectrum at distances below the electronic mean free path, as compared to a local description. We also find that the mean free path provides a lower limit to the correlation (coherence) length of the near field fluctuations. The short-distance behaviour is… 

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