Abstract
A system of superconducting layers with Josephson coupling J between them is studied. When the in-layer penetration depthe is larger than the spacing d between layers, as in CuO2-based superconductors, there is a single three-dimensional transition temperature Tc. The ratio Tc/ where =02/42e, is found to vary from 1/8 to 1, being near 1/8 when J/Tc is exponentially small. When ed a two-dimensional (2D) behavior is possible; in particular, bulk superconductors separated by 2D junctions exhibit a 2D transition, below the bulk transition, in which the junctions become ordered. This 2D behavior is due to the gauge coupling and is absent in an XY model where e
| Original language | English |
|---|---|
| Pages (from-to) | 12632-12635 |
| Number of pages | 4 |
| Journal | Physical Review B |
| Volume | 45 |
| Issue number | 21 |
| DOIs | |
| State | Published - 1 Jan 1992 |
ASJC Scopus subject areas
- Condensed Matter Physics