Polarizabilities of SiN (N = 8–75) clusters from molecular beam electric deflection experiments
Polarizabilities of SiN (N = 8–75) clusters from molecular beam electric deflection experiments
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分子束电偏转实验中 SiN (N = 8â75) 团簇的极化率
DOI:
10.1140/epjd/e2012-30467-7
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发表时间:
2012
期刊:
影响因子:
--
通讯作者:
R. Schäfer
中科院分区:
文献类型:
--
作者:
D. A. Götz;S. Heiles;R. Schäfer
We have studied the polarizabilities of neutral silicon clusters with 8 to 75 atoms at 300 K employing the molecular beam deflection technique. In the range of 8 to 30 atoms the polarizability is strongly size-dependent, whereas for clusters up to 75 atoms polarizability approaches the bulk value of 3.71 Å3, estimated from the Clausius-Mossotti relation forα-Si. This indicates a transition in the growing pattern of silicon clusters in this range. For some clusters, i.e. Si18, we observe a significantly increased polarizability compared to the bulk value, which can be interpreted by taking a permanent dipole moment via a simple Langevin-Debye model into account.
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DOI:
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发表时间:
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期刊:
The Journal of chemical physics
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--
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