Electromigration theory unified
Electromigration theory unified
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DOI：
10.1209/epl/i2005-10306-9
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发表时间：
2005-08
期刊：
影响因子：
1.8
通讯作者：
A. Lodder
中科院分区：
文献类型：
--
作者：
A. Lodder
博斯维厄和弗里德尔（J.物理学）的起始公式。化学。固体，23(1962)123)对于由于施加电压而对金属中的离子施加的力的描述与自Kumar和Sorbello （Thin Solid Films, 25(1975) 25）引入以来在该领域使用的线性响应方法相同。由此电迁移理论成为一个统一的理论。这是在考虑了一个危险的陷阱项之后得出的，这个项乍一看似乎是零。到目前为止，博斯维厄和弗里德尔声称预测到一种完全屏蔽的直接力量，这意味着只有一种风力会起作用。此外，筛分的量已经计算到二级迁移杂质的势，使用有限温度版本的筛分项导出的沙姆（物理学）。Rev. B, 12(1975) 3142)。对于金属中以凝胶为模型的质子，筛选率似乎约为15%，这既不能忽略，也不能与旧的全筛选观点相调和。
The starting formula of Bosvieux and Friedel (J. Phys. Chem. Solids, 23 (1962) 123) for the force on an ion in a metal due to an applied voltage is shown to lead to the same description as the linear-response approach used in the field since its introduction by Kumar and Sorbello (Thin Solid Films, 25 (1975) 25). By this electromigration theory has become a unified theory. This follows after accounting for a treacherous trap term, which at first sight seems to be zero. Up to now, Bosvieux and Friedel claimed to predict a completely screened direct force, which means that only a wind force would be operative. In addition, the amount of screening has been calculated up to second order in the potential of the migrating impurity, using a finite temperature version of the screening term derived by Sham (Phys. Rev. B, 12 (1975) 3142). For a proton in a metal modeled as a jellium the screening appears to be about 15%, which is neither negligible nor reconcilable with the old full-screening point of view.