Abstract
The parallel critical field of a stack of superconducting and insulating layers is calculated as a function of the superconducting layer's coherence length and thickness interlayer coherence length , and insulating thickness . It is shown that the critical field shows an upturn when the stack crosses over from the strongly coupled or three-dimensional regime () to the weakly coupled or two-dimensional regime (). This upturn is a general property of such stacks, though it is more pronounced when .
- Received 6 December 1976
DOI:https://doi.org/10.1103/PhysRevB.17.1249
©1978 American Physical Society