利用表面金属调控石墨烯
材料科学
2009-11-13 v3 强关联电子
摘要
我们利用存在局部充电能 (LDA+U) 的局域密度近似下的密度泛函理论,研究了金属掺杂对石墨烯电子性质的影响。电子性质对石墨烯是掺杂碱金属还是过渡金属非常敏感。我们根据石墨烯片的局部充电能,估算了石墨烯表面单层钾的电荷转移。另一方面,用非磁性的钯层涂覆石墨烯,由于过渡金属和碳轨道之间的杂化,可能导致涂覆后的石墨烯产生磁不稳定性。
引用
@article{arxiv.0706.1237,
title = {Tailoring Graphene with Metals on Top},
author = {B. Uchoa and C. -Y. Lin and A. H. Castro Neto},
journal= {arXiv preprint arXiv:0706.1237},
year = {2009}
}
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5 pages, 4 figures
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