| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Emergent Materials under Extremes and Decisive In Situ Characterizations
|
| Presentation Title |
Novel Properties in Cuprates Prepared by High Pressure Oxygen Synthesis |
| Author(s) |
Steven D. Conradson |
| On-Site Speaker (Planned) |
Steven D. Conradson |
| Abstract Scope |
Following the initial discovery of high temperature superconductivity in cuprates it was quickly established that doping by oxidation with O2 gave a nearly universal phase diagram characterized by a superconducting "dome" in which the material shifted from an AFM insulator to a superconductor at a charge on the Cu ions in the conducting CuO2 planes of ~2.06, exhibited maximum Tc at ~2.15, and ended with conversion to a normal Fermi liquid at ~2.26. However, oxidation with chlorate or peroxide at high temperature and pressure gives nominally the same compounds but with superconductivity extending through the maximum attainable O stoichiometries. These HPO materials exhibit a number of properties that question many of the assumptions of HTSC. |