Investigation of Alkaline metal vibration effect on the electric states in β-pyrochlore oxides
碱金属振动对β-烧绿石氧化物电态影响的研究
基本信息
- 批准号:21740257
- 负责人:
- 金额:$ 2.66万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Young Scientists (B)
- 财政年份:2009
- 资助国家:日本
- 起止时间:2009 至 2010
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Alkaline atoms in the β-pyrochlore oxides vibrate with unusually large amplitude. The large amplitude vibrations are expected to take an important role in the superconducting state of the -pyrochlore oxides. In this investigation, anharmonicity of the vibrations, which characterizes the anomaly of the large amplitude vibrations, is successfully estimated, and it is revealed that K vibrations in KOs_2O_6 possess anomalously large anharmonicity. From a series of anharmonicity investigations, an important factor to affect anharmonicity has been determined, and a principle to realize large anharmonicity has been revealed.
β焦绿石氧化物中的碱性原子以异常大的幅度振动。大振幅振动有望在烧绿石氧化物的超导状态中发挥重要作用。在这项研究中,成功地估计了表征大振幅振动反常的振动的非谐性,并揭示了KOS_2O_6中的K振动具有反常的大非谐性。通过一系列的非谐性研究,确定了影响非谐性的一个重要因素,揭示了实现大非谐性的原理。
项目成果
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