• DOI:10.1103/PhysRevB.65.153409
• Corpus ID: 119382040

Persistent currents in diffusive metallic cavities: Large values and anomalous scaling with disorder

@article{Chiappe2002PersistentCI,
  title={Persistent currents in diffusive metallic cavities: Large values and anomalous scaling with disorder},
  author={G. Chiappe and M. J. S'anchez},
  journal={Physical Review B},
  year={2002},
  volume={65},
  pages={153409}
}

• G. Chiappe, M. J. S'anchez
• Published 1 August 2001
• Materials Science
• Physical Review B

The effect of disorder on confined metallic cavities with an Aharonov-Bohm flux line is addressed. We find that, even deep in the diffusive regime, large values of persistent currents may arise for a wide variety of geometries. We present numerical results supporting an anomalous scaling law of the average typical current $〈{I}_{\mathrm{typ}}〉$ with the strength of disorder w, $〈{I}_{\mathrm{typ}}〉\ensuremath{\sim}{w}^{\ensuremath{-}\ensuremath{\gamma}}$ with $\ensuremath{\gamma}l2.$ This is contrasted with previously reported results obtained for cylindrical samples where a scaling $〈{I}_{\mathrm{typ}}〉\ensuremath{\sim}{w}^{\ensuremath{-}2}$ has been found. Possible links to, up to date, unexplained experimental data are finally discussed.