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碳分子线基态特性理论研究 被引量:2

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摘要 从第一原理出发,利用密度泛函理论B3LYP系统研究了碳分子线Cn(n=3~10)的电子结构特性.对优化结果分析发现,由于离域效应的作用,当n为奇数时,分子线基态为单重态,反之,当n为偶数时,三重态为其稳定的基态.对其电子结构分析可得,随着n的增加,体系能量逐渐降低;同时本文确定了分子线体系最高占据轨道HOMO能量E^H、最低未占据轨道LUMO能量E^L与n的关系式,即En-2^H〈En^H〈En+2^H,En-2^L〉En^L〉En+2^L,因而碳分子线的费米能级会表现出特有的奇偶性.该工作将有利于准确认识分子器件的伏安特性,设计出良好性能的分子器件。
出处 《原子与分子物理学报》 CAS CSCD 北大核心 2006年第B04期164-166,共3页 Journal of Atomic and Molecular Physics
基金 国家自然科学NSAF基金项目(10376022)
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共引文献19

同被引文献36

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