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arXiv 1208.3207cond-mat.mtrl-sci
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金刚石中镍相关配合物的电子性质和超精细场

Electronic properties and hyperfine fields of nickel-related complexes in diamond

R. Larico, J. F. Justo, W. V. M. Machado, L. V. C. Assali

摘要:

利用第一性原理研究了金刚石中与镍有关的缺陷中心的微观性质。几种配置,涉及替代和填隙镍杂质,已被认为是在隔离配置或形成复合物与其他缺陷,如空位和硼和氮掺杂剂。结果,在自旋,对称性,和超精细领域,进行了比较与现有的实验数据的电活性中心的合成金刚石。此前提出的用于解释这些数据的几个微观模型已得到本次调查的证实,而一些模型可能会被丢弃。我们还对其中几个中心的微观结构提供了新的见解。

英文摘要:

We carried out a first principles investigation on the microscopic properties of nickel-related defect centers in diamond. Several configurations, involving substitutional and interstitial nickel impurities, have been considered either in isolated configurations or forming complexes with other defects, such as vacancies and boron and nitrogen dopants. The results, in terms of spin, symmetry, and hyperfine fields, were compared with the available experimental data on electrically active centers in synthetic diamond. Several microscopic models, previously proposed to explain those data, have been confirmed by this investigation, while some models could be discarded. We also provided new insights on the microscopic structure of several of those centers.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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