Charging effects and quantum crossover in granular superconductors.
@article{Granato1993ChargingEA, title={Charging effects and quantum crossover in granular superconductors.}, author={Granato and Continentino}, journal={Physical review. B, Condensed matter}, year={1993}, volume={48 21}, pages={ 15977-15982 } }
The effects of the charging energy in the superconducting transition of granular materials or Josephson-junction arrays are investigated using a pseudo-spin-one model. Within a mean-field renormalization-group approach, we obtain the phase diagram as a function of temperature and charging energy. In contrast to earlier treatments, we find no sign of a reentrant transition in agreement with more recent studies. A crossover line is identified in the nonsuperconducting side of the phase diagram…
9 Citations
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