First-Principles Studies on the Structural and Electronic Properties of As Clusters.

First-Principles Studies on the Structural and Electronic Properties of As Clusters.
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As团簇结构和电子性质的第一性原理研究

DOI:
10.3390/ma11091596
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发表时间:
2018-09-03
期刊:
Materials (Basel, Switzerland)
影响因子:
--
通讯作者:
Wang B
Wang B
中科院分区:
其他
文献类型:
--
作者:
Yan J;Xia J;Zhang Q;Zhang B;Wang B

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基于遗传算法(GA)和密度泛函理论(DFT)相结合的计算方法,研究了中性和带电砷簇合物ASN(n=2-24)的结构和电子性质。讨论了中性团簇的结合能、HOMO-LUMO能级和团簇能量二次差等与尺寸有关的物理性质。在较大的星系团Asn(n≥8)中,基于As8单元和As2桥的超星系团结构占主导地位。此外,根据生长模式预测了As28、As38和As180可能的几何结构。
Based on the genetic algorithm (GA) incorporated with density functional theory (DFT) calculations, the structural and electronic properties of neutral and charged arsenic clusters Asn (n = 2–24) are investigated. The size-dependent physical properties of neutral clusters, such as the binding energy, HOMO-LUMO gap, and second difference of cluster energies, are discussed. The supercluster structures based on the As8 unit and As2 bridge are found to be dominant for the larger cluster Asn (n ≥ 8). Furthermore, the possible geometric structures of As28, As38, and As180 are predicted based on the growth pattern.
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影响因子: 1.8
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