标题：
Ruderman-Kittel-Kasuya-Yosida Mechanism for Magnetic Ordering of Sparse Fe Adatoms on Graphene
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所属单位：
理学院
发表刊物：
J. Phys. Chem. C
摘要：
First-principles calculations are carried out to elucidate the mechanism of the exchange interaction among magnetic adatoms on graphene, using Fe-graphene as an example. By fitting the calculated spin wave spectra of different sparse adsorption configurations to the Heisenberg Hamiltonian, the exchange parameters between different neighbors (Ji) were found to follow a single Ruderman-Kittel-Kasuya-Yosida (RKKY)-type function, indicating that the RKKY mechanism plays the dominant role in governing the magnetic order in these systems. Furthermore, calculated formation energies suggest that the 3 × 3 structure can be a metastable state for the growth of Fe on graphene, which otherwise may easily form clusters. © Copyright 2019 American Chemical Society.
ISSN号：
1932-7447
是否译文：
否
发表时间：
2019-02-21
合写作者：
潘燕飞,Yang, Z.Q.,Wei, X.Y.,Hu, J.,Feng, Y.P.,Zhang, H.,Wu, R.Q.
通讯作者：
朱岩
发表时间：
2019-02-21
学位：理学博士学位
职称：副教授
所在单位：理学院