Pressure Dependence of Tc in Tl2Ba2CaCu2O8 at Hydrostatic Pressures to 6 GPa
Abstract
Studies of the pressure dependencies of the critical temperatures of hole-doped high Tc superconductors in the past have demonstrated, with very few exceptions, monotonically increasing Tc's with increasing pressure. This is thought to be due to the pressure-induced injection of holes onto the conduction planes resulting from a change in the apical Cu-O bond length, a view consistent with the drop of critical temperature with decreasing oxygen concentration and hence decreasing hole concentration. Recently work has been performed which indicates that for many of the thallium-based cuprates, increases in the oxygen content in as-made samples, actually decreases Tc, while decreases in oxygen content produce sharp increases in Tc, followed by decreases with further oxygen reduction.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1991
- Accession Number
- ADA243433
Entities
People
- D. H. Liebenberg
- E. F. Skelton
- N. E. Moulton
- S. A. Wolf
Organizations
- Naval Air Weapons Station China Lake