期刊论文详细信息
O-17-NMR Knight shift study of the interplay between superconductivity and pseudogap in (CaxLa1-x)(Ba1.75-xLa0.25+x)Cu3Oy | |
Article | |
关键词: HIGH-T-C; MAGNETIC-PROPERTIES; TEMPERATURE; PHASE; FLUCTUATIONS; DENSITY; STATE; LINE; | |
DOI : 10.1103/PhysRevB.90.054508 | |
来源: SCIE |
【 摘 要 】
We report systematic O-17-NMR measurements on the high-T-c cuprate (CaxLa1-x)(Ba1.75-xLa0.25+x)Cu3Oy, for four different families (different x). Using Knight shift data, we show that the pseudogap opening temperature T* is much higher than T-c near optimal doping, unlike structurally similar YBCO. In addition, at constant doping the pseudogap temperature does not vary with x, in contrast to T-c. This puts constraints on the nature of the pseudogap and position of the quantum critical point inside the superconducting dome.
【 授权许可】
Free