What have we learned from high-pressure experiments on Cu-oxide and Fe-based superconductors?

10th International Conference on Materials and Mechanisms of Superconductivity

Schilling, James^1 ; Hillier, Narelle^1 ; Foroozani, Neda^1

Department of Physics, Washington University, One Brookings Dr, St Louis, MO 63130, United States^1

关键词: Doping range;    High temperature superconductor (HTS);    High-pressure environment;    High-pressure experiment;    Optimal doping;    Quasi-2d;    Superconducting planes;    Uniaxial pressures;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/449/1/012021/pdf
DOI  :  10.1088/1742-6596/449/1/012021

来源: IOP

【 摘 要 】

High-pressure experiments have made many important contributions to the field of superconductivity, including studies on the Cu-oxide and Fe-based high-temperature superconductors (HTS). However, for detailed quantitative understanding, the nature of the high-pressure environment acting on the sample must be well defined, a requirement often not met. Since HTS are quasi-2D, all properties are anisotropic. As a result, only a combination of fully hydrostatic and uniaxial pressure experiments are capable of providing the detailed information required. Unfortunately, very few such experiments have been carried out. For both Cu-oxide and Fe-based HTS at optimal doping, Tc is found to be enhanced by either increasing the separation of the superconducting planes or decreasing their area. Future experiments will extend such hydrostatic/uniaxial studies over the entire doping range.