Generic superconducting phase behavior in high-Tc cuprates: Tc variation with hole concentration in YBa2Cu3O7-δ
Abstract
A direct determination of the relationship between Tc and hole concentration p for Y1-xCaxBa2Cu3O7-δ is obtained by investigating the properties of the fully oxygen-deficient (δ~=1.0) compound for which p=x/2. Measurements of Tc, the thermoelectric power S, and bond-valence sums calculated from neutron-diffraction refinements for various values of x and δ allow the full determination of the relations p=p(δ), Tc=Tc(p), and S=S(T,p) confirming that YBa2Cu3O7-δ satisfies the same universal relations in these quantities as the other high-Tc superconducting cuprates.
- Publication:
-
Physical Review B
- Pub Date:
- May 1995
- DOI:
- 10.1103/PhysRevB.51.12911
- Bibcode:
- 1995PhRvB..5112911T
- Keywords:
-
- 74.25.Fy;
- 74.62.Dh;
- 74.72.Bk;
- 61.12.Gz;
- Transport properties;
- Effects of crystal defects doping and substitution;
- Y-based cuprates