Stress-dependent electrical transport and its universal scaling in granular materials

@article{Zhai2017StressdependentET,
  title={Stress-dependent electrical transport and its universal scaling in granular materials},
  author={C. Zhai and Dorian A. H. Hanaor and G. Proust and Y. Gan},
  journal={arXiv: Disordered Systems and Neural Networks},
  year={2017}
}
We experimentally and numerically examine stress-dependent electrical transport in granular materials to elucidate the origins of their universal dielectric response. The ac responses of granular systems under varied compressive loadings consistently exhibit a transition from a resistive plateau at low frequencies to a state of nearly constant loss at high frequencies. By using characteristic frequencies corresponding to the onset of conductance dispersion and measured direct-current resistance… Expand
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