| Co掺杂对充填型方钴矿化合物PrFe4P12的强关联电子性质的影响 |
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| 引用本文： | 杨浩智,郝丽杰,陈东风,赵崇德,赵志祥,焦学胜. Co掺杂对充填型方钴矿化合物PrFe4P12的强关联电子性质的影响[J]. 原子能科学技术, 2016, 50(6): 961-965. DOI: 10.7538/yzk.2016.50.06.0961 |
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| 作者姓名： | 杨浩智 郝丽杰 陈东风 赵崇德 赵志祥 焦学胜 |
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| 作者单位： | 中国原子能科学研究院 核物理研究所，北京102413 |
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| 基金项目： | 国家自然科学基金面上项目资助(11074309) |
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| 摘 要： | 充填型方钴矿化合物PrFe4P12在低温6.5 K显示出异常有序相变及重电子性质。为研究3d电子在这些相变中的影响，采用助溶剂方法制备了Pr(Fe1-xCox)4P12样品，通过测量比热、磁化率及非弹性中子散射对掺杂前后f电子状态的变化进行了研究。实验结果表明，PrFe4P12的物性对Co的掺杂极为敏感，仅3%的掺杂即可导致异常有序相迅速消失，同时其重电子态受明显抑制，f电子由与传导电子的混合态转变为局域态。
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| 关 键 词： | 强关联电子 非弹性中子散射 重电子 |
Effect of Co Doping on Strongly Correlated Electron Property of Filled Skutterudite Compound PrFe4P12 |
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| YANG Hao-zhi,HAO Li-jie,CHEN Dong-feng,ZHAO Chong-de,ZHAO Zhi-xiang,JIAO Xue-sheng. Effect of Co Doping on Strongly Correlated Electron Property of Filled Skutterudite Compound PrFe4P12[J]. Atomic Energy Science and Technology, 2016, 50(6): 961-965. DOI: 10.7538/yzk.2016.50.06.0961 |
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| Authors: | YANG Hao-zhi HAO Li-jie CHEN Dong-feng ZHAO Chong-de ZHAO Zhi-xiang JIAO Xue-sheng |
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| Affiliation: | Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China |
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| Abstract: | The filled skutterudite compound PrFe4P12 exhibits anomalously phase transition and heavy Fermion (HF) state below 6.5 K.In order to investigate effects of 3d-electron on the phase transition and HF state,samples of Pr(Fe1-xCox)4P12 were synthesized to observe evolution of f-electron state by specific heat,magnetic susceptibility measurement and inelastic neutron scattering.The experiment results indicate that the properties of PrFe4P12 are very sensitive to Co doping.The ordered state and HF state are suppressed by only 3% Co substitution,and the well-localized nature of f electrons appears in the Co-substituted system. |
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| Keywords: | strongly correlated electron inelastic neutron scattering heavy Fermion |
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