Abstract
Experimental results of the muon-spin-relaxation rate, the pressure dependence coefficient and the isotope effect coefficient of the transition temperature of extreme type-II superconductors are analyzed in terms of an ansatz leading to a parabolic dependence of the transition temperature on condensate density. The resulting universal properties and trends are remarkably consistent with experiment and imply crucial constraints on the microscopic theory.
- Received 1 October 1992
DOI:https://doi.org/10.1103/PhysRevLett.69.3374
©1992 American Physical Society
