论文标题
电子掺杂效应对未掺杂的（无CE）超导体T'-LA1.8EU0.2CUO4在氟取代氧气中研究的（无CE）
Electron-Doping Effect on Tc in the Undoped (Ce-Free) Superconductor T'-La1.8Eu0.2CuO4 Studied by the Fluorine Substitution for Oxygen
论文作者
论文摘要
我们通过使用NH4F的氟化（y = 0-0-0.15）的t'-la1.8eu0.2cuO4-yfy（y = 0-0.15）的电子掺杂的多晶体样品成功完成了荧光（ce-ce-ce-fe-la-la1.8eU0.2cuO4），使用NH4F。磁敏感性测量结果表明，超导过渡温度随着y的增加而增加，在y = 0.025时最多显示23 k，并且降低。 Tc对T型（LA，EU）基于掺杂的载体浓度的圆顶状依赖性是根据基于D-P模型计算的自旋波动介导的配对来解释的。 Yamazaki等人，J。Phys。：Conf。 ser。 871，012009（2017）]。
We have succeeded in synthesizing electron-doped polycrystalline bulk samples of T'-La1.8Eu0.2CuO4-yFy (y = 0 - 0.15) by the fluorination of undoped (Ce-free) T'-La1.8Eu0.2CuO4 using NH4F. The magnetic susceptibility measurements have revealed that the superconducting transition temperature, Tc, increases with increasing y, exhibits the maximum of 23 K at y = 0.025, and decreases. The dome-like dependence of Tc on the doped carrier concentration in the T'-type (La,Eu)-based cuprates is explained in terms of the pairing mediated by spin fluctuations based on the d-p model calculation [K. Yamazaki et al., J. Phys.: Conf. Ser. 871, 012009 (2017)].
