中国物理B ›› 2015, Vol. 24 ›› Issue (7): 76802-076802.doi: 10.1088/1674-1056/24/7/076802

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Adsorption behavior of Fe atoms on a naphthalocyanine monolayer on Ag(111) surface

闫凌昊a, 武荣庭a, 包德亮b, 任俊海a, 张艳芳a, 张海刚c, 黄立a, 王业亮a b, 杜世萱a b, 郇庆a b, 高鸿钧a b   

  1. a Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    b University of Chinese Academy of Sciences, Beijing 100049, China;
    c Center for Nanoscale Materials, Argonne National Laboratory, Chicago, IL 60439, USA
  • 收稿日期:2015-03-19 修回日期:2015-04-21 出版日期:2015-07-05 发布日期:2015-07-05
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61390501, 51325204, and 11204361), the National Basic Research Program of China (Grant Nos. 2011CB808401 and 2011CB921702), the National Key Scientific Instrument and Equipment Development Project of China (Grant No. 2013YQ1203451), the National Supercomputing Center in Tianjin, China, and the Chinese Academy of Sciences.

Adsorption behavior of Fe atoms on a naphthalocyanine monolayer on Ag(111) surface

Yan Ling-Hao (闫凌昊)a, Wu Rong-Ting (武荣庭)a, Bao De-Liang (包德亮)b, Ren Jun-Hai (任俊海)a, Zhang Yan-Fang (张艳芳)a, Zhang Hai-Gang (张海刚)c, Huang Li (黄立)a, Wang Ye-Liang (王业亮)a b, Du Shi-Xuan (杜世萱)a b, Huan Qing (郇庆)a b, Gao Hong-Jun (高鸿钧)a b   

  1. a Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    b University of Chinese Academy of Sciences, Beijing 100049, China;
    c Center for Nanoscale Materials, Argonne National Laboratory, Chicago, IL 60439, USA
  • Received:2015-03-19 Revised:2015-04-21 Online:2015-07-05 Published:2015-07-05
  • Contact: Du Shi-Xuan, Huan Qing E-mail:sxdu@iphy.ac.cn;huanq@iphy.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61390501, 51325204, and 11204361), the National Basic Research Program of China (Grant Nos. 2011CB808401 and 2011CB921702), the National Key Scientific Instrument and Equipment Development Project of China (Grant No. 2013YQ1203451), the National Supercomputing Center in Tianjin, China, and the Chinese Academy of Sciences.

摘要: Adsorption behavior of Fe atoms on a metal-free naphthalocyanine (H2Nc) monolayer on Ag(111) surface at room temperature has been investigated using scanning tunneling microscopy combined with density functional theory (DFT) based calculations. We found that the Fe atoms were adsorbed on the centers of H2Nc molecules and formed Fe–H2Nc complexes at low coverage. DFT calculations show that Fe sited in the center of the molecule is the most stable configuration, in good agreement with the experimental observations. After an Fe–H2Nc complex monolayer was formed, the extra Fe atoms self-assembled to Fe clusters of uniform size and adsorbed dispersively at the interstitial positions of Fe–H2Nc complex monolayer. Therefore, the H2Nc monolayer grown on Ag(111) could be a good template to grow dispersed magnetic metal atoms and clusters at room temperature for further investigation of their magnetism-related properties.

关键词: naphthalocyanine, Fe atoms, Ag(111) surface, adsorption behavior

Abstract: Adsorption behavior of Fe atoms on a metal-free naphthalocyanine (H2Nc) monolayer on Ag(111) surface at room temperature has been investigated using scanning tunneling microscopy combined with density functional theory (DFT) based calculations. We found that the Fe atoms were adsorbed on the centers of H2Nc molecules and formed Fe–H2Nc complexes at low coverage. DFT calculations show that Fe sited in the center of the molecule is the most stable configuration, in good agreement with the experimental observations. After an Fe–H2Nc complex monolayer was formed, the extra Fe atoms self-assembled to Fe clusters of uniform size and adsorbed dispersively at the interstitial positions of Fe–H2Nc complex monolayer. Therefore, the H2Nc monolayer grown on Ag(111) could be a good template to grow dispersed magnetic metal atoms and clusters at room temperature for further investigation of their magnetism-related properties.

Key words: naphthalocyanine, Fe atoms, Ag(111) surface, adsorption behavior

中图分类号:  (Scanning tunneling microscopy (including chemistry induced with STM))

  • 68.37.Ef
68.35.bm (Polymers, organics) 68.35.Fx (Diffusion; interface formation) 68.35.Md (Surface thermodynamics, surface energies)