中国物理B ›› 2015, Vol. 24 ›› Issue (11): 117204-117204.doi: 10.1088/1674-1056/24/11/117204

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Transport properties of zigzag graphene nanoribbons adsorbed with single iron atom

杨玉娥, 肖杨, 颜晓红, 戴昌杰   

  1. Department of Applied Physics, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
  • 收稿日期:2015-04-19 修回日期:2015-06-11 出版日期:2015-11-05 发布日期:2015-11-05
  • 通讯作者: Xiao Yang E-mail:fryxiao@nuaa.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11374162 and 51032002) and the Key Project of the National High Technology Research and Development Program of China (Grant No. 2011AA050526).

Transport properties of zigzag graphene nanoribbons adsorbed with single iron atom

Yang Yu-E (杨玉娥), Xiao Yang (肖杨), Yan Xiao-Hong (颜晓红), Dai Chang-Jie (戴昌杰)   

  1. Department of Applied Physics, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
  • Received:2015-04-19 Revised:2015-06-11 Online:2015-11-05 Published:2015-11-05
  • Contact: Xiao Yang E-mail:fryxiao@nuaa.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11374162 and 51032002) and the Key Project of the National High Technology Research and Development Program of China (Grant No. 2011AA050526).

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摘要： We have performed density-functional calculations of the transport properties of the zigzag graphene nanoribbon (ZGNR) adsorbed with a single iron atom. Two adsorption configurations are considered, i.e., iron adsorbed on the edge and on the interior of the nanoribbon. The results show that the transport features of the two configurations are similar. However, the transport properties are modified due to the scattering effects induced by coupling of the ZGNR band states to the localized 3d-orbital state of the iron atom. More importantly, one can find that several dips appear in the transmission curve, which is closely related to the above mentioned coupling. We expect that our results will have potential applications in graphene-based spintronic devices.

关键词: graphene nanoribbon, transport properties, iron adatom

Abstract: We have performed density-functional calculations of the transport properties of the zigzag graphene nanoribbon (ZGNR) adsorbed with a single iron atom. Two adsorption configurations are considered, i.e., iron adsorbed on the edge and on the interior of the nanoribbon. The results show that the transport features of the two configurations are similar. However, the transport properties are modified due to the scattering effects induced by coupling of the ZGNR band states to the localized 3d-orbital state of the iron atom. More importantly, one can find that several dips appear in the transmission curve, which is closely related to the above mentioned coupling. We expect that our results will have potential applications in graphene-based spintronic devices.

Key words: graphene nanoribbon, transport properties, iron adatom

中图分类号:  (Electronic transport in graphene)

  • 72.80.Vp
72.25.-b (Spin polarized transport) 73.20.Hb (Impurity and defect levels; energy states of adsorbed species)