Evaluation of superconducting transition temperatures by change and response characteristics of the electronic wave function
通过电子波函数的变化和响应特性评估超导转变温度
基本信息
- 批准号:15560607
- 负责人:
- 金额:$ 1.86万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2003
- 资助国家:日本
- 起止时间:2003 至 2004
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Superconducting transition temperatures of B1 transition metal compounds (TiC, TiN, TiO, VC, VN, VO, ZrC, ZrN, ZrB, NbC, NbN and NbO) are investigated by the DV-Xα cluster method. The transition temperature is found to correlate with the ratio of bond overlap population in the cluster models where the center site atom is displaced. The molecular orbital response itself appears to be strongly related to the occurrence of superconductivity. Electron-phonon and/or magnetic interaction therefore appear not to be primary factors, and the orbital response itself would be the universal factor governing superconductivity. Assuming that superconductivity is a chemical reaction phenomenon in a solid, it would be useful to focus on the relation between superconducting properties and catalytic properties in the search for new superconductors.
采用DV-Xα团簇方法研究了B1过渡金属化合物(TiC、TiN、TiO、VC、VN、VO、ZrC、ZrN、ZrB、NbC、NbN和NbO)的超导转变温度。发现转变温度与中心原子被置换的簇模型中的键重叠布居比相关。分子轨道响应本身似乎与超导性的发生密切相关。因此,电子-声子和/或磁相互作用似乎不是主要因素,轨道响应本身将是控制超导性的普遍因素。假设超导性是固体中的一种化学反应现象,在寻找新的超导体时,关注超导性质和催化性质之间的关系将是有用的。
项目成果
期刊论文数量(28)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
分子軌道関数の変化特性に着目したNaC1型超伝導化合物の転移温度の評価
关注分子轨道函数变化特征评价NaC1型超导化合物的转变温度
- DOI:
- 发表时间:2004
- 期刊:
- 影响因子:0
- 作者:高原渉;南二三吉
- 通讯作者:南二三吉
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