## 摘要

Neutron inelastic measurements on Y_{0.52}Pr_{0.48}Ba_{2}Cu_{3}O_{7} have been carried out. From the magnetic excitation spectra X″(q, ω), it is found that the reduction of the hole-carrier concentration p and the randomness effects introduced by the substitution of Y with Pr suppress the superconductivity. Based on the hole-trapping model, the origin of the randomness effects can be explained. The R-ion-size dependence of the suppression rate of the superconducting transition temperature, |dT_{c}/d x|, can also be explained qualitatively. By measuring the Hall coefficients R_{H} of R_{1-x}Pr_{x}Ba_{2}Cu_{3}O_{7} (R = Yb, Y, Gd and Sm), |d p /d x| is found to be insensitive to the species of R. For RBa_{2}Cu_{3}O_{7} (without Pr atoms), p decreases with increasing R-ion-size, which presents another possible explanation of the R-ion-size dependence of |dTc/d x|.

原文 | English |
---|---|

頁（從 - 到） | 333-335 |

頁數 | 3 |

期刊 | Physica C: Superconductivity and its applications |

卷 | 263 |

發行號 | 1-4 |

DOIs | |

出版狀態 | Published - 1996 5月 |

## All Science Journal Classification (ASJC) codes

- 電子、光磁材料
- 凝聚態物理學
- 能源工程與電力技術
- 電氣與電子工程

## 指紋

深入研究「T_{c}-suppression mechanism of Pr-doping in (R, Pr)Ba

_{2}Cu

_{3}O

_{7}」主題。共同形成了獨特的指紋。