Superconductivity phase diagram of Se-substituted CeO0.5F0.5Bi(S1-xSex)2

TMU International Symposium on "New Quantum Phases Emerging from Novel Crystal Structure"

Mizuguchi, Yoshikazu^1 ; Hiroi, Takafumi^1 ; Miura, Osuke^1

Tokyo Metropolitan University, 1-1 Minami-osawa, Hachioji

192-0397, Japan^1

关键词: Bulk superconductivity;    Superconducting properties;    Superconductivity phase diagrams;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/683/1/012001/pdf
DOI  :  10.1088/1742-6596/683/1/012001

来源: IOP

【 摘 要 】

We investigated the effects of Se substitution on the lattice constants and superconducting properties of CeO0.5F0.5Bi(S1-xSex)2. With increasing Se concentration, the a lattice constant increased, while the c lattice constant did not show any significant increase between x = 0.1 and x = 0.5. Bulk superconductivity was observed in samples with x = 0.2-0.4, and the superconducting transition temperature was the highest at x = 0.3. The obtained superconductivity phase diagram was compared to those of LaO0.5F0.5Bi(S1-xSex)2and NdO0.5F0.5Bi(S1-xSex)2.