Abstract
The quantum Hamiltonian , with the Josephson and the charging energy between grains, is studied. Renormalization-group equations are derived within a semiclassical approximation that show that there is a reentrant normal phase for nonzero ; phase coherence is stable in a region of temperature that shrinks to zero as the quantum fluctuations grow, up to a critical value. The possible connection of these results to recent experiments is discussed.
- Received 26 October 1983
DOI:https://doi.org/10.1103/PhysRevB.29.2836
©1984 American Physical Society