中国物理B ›› 2016, Vol. 25 ›› Issue (3): 36801-036801.doi: 10.1088/1674-1056/25/3/036801

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Image potential states mediated STM imaging of cobalt phthalocyanine on NaCl/Cu(100)

Qinmin Guo(郭秦敏), Zhihui Qin(秦志辉), Min Huang(黄敏), Vladimir N. Mantsevich , Gengyu Cao(曹更玉)   

  1. 1. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China;
    2. Faculty of Physics, Moscow State University, Moscow 119991, Russia
  • 收稿日期:2015-09-30 修回日期:2015-12-28 出版日期:2016-03-05 发布日期:2016-03-05
  • 通讯作者: Gengyu Cao E-mail:gycao@wipm.ac.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 21203239 and 21311120059) and RFBR (Grant No. 13-02-91180).

Image potential states mediated STM imaging of cobalt phthalocyanine on NaCl/Cu(100)

Qinmin Guo(郭秦敏)1, Zhihui Qin(秦志辉)1, Min Huang(黄敏)1, Vladimir N. Mantsevich 2, Gengyu Cao(曹更玉)1   

  1. 1. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China;
    2. Faculty of Physics, Moscow State University, Moscow 119991, Russia
  • Received:2015-09-30 Revised:2015-12-28 Online:2016-03-05 Published:2016-03-05
  • Contact: Gengyu Cao E-mail:gycao@wipm.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 21203239 and 21311120059) and RFBR (Grant No. 13-02-91180).

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摘要： The adsorption and electronic properties of isolated cobalt phthalocyanine (CoPc) molecule on an ultrathin layer of NaCl have been investigated. High-resolution STM images give a detailed picture of the lowest unoccupied molecular orbital (LUMO) of an isolated CoPc. It is shown that the NaCl ultrathin layer efficiently decouples the interaction of the molecules from the underneath metal substrate, which makes it an ideal substrate for studying the properties of single molecules. Moreover, strong dependence of the appearance of the molecules on the sample bias in the region of relatively high bias (>3.1 V) is ascribed to the image potential states (IPSs) of NaCl/Cu(100), which may provide us with a possible method to fabricate quantum storage devices.

关键词: image potential states, NaCl ultrathin layer, CoPc, scanning tunneling microscopy

Abstract: The adsorption and electronic properties of isolated cobalt phthalocyanine (CoPc) molecule on an ultrathin layer of NaCl have been investigated. High-resolution STM images give a detailed picture of the lowest unoccupied molecular orbital (LUMO) of an isolated CoPc. It is shown that the NaCl ultrathin layer efficiently decouples the interaction of the molecules from the underneath metal substrate, which makes it an ideal substrate for studying the properties of single molecules. Moreover, strong dependence of the appearance of the molecules on the sample bias in the region of relatively high bias (>3.1 V) is ascribed to the image potential states (IPSs) of NaCl/Cu(100), which may provide us with a possible method to fabricate quantum storage devices.

Key words: image potential states, NaCl ultrathin layer, CoPc, scanning tunneling microscopy

中图分类号:  (Microscopy of surfaces, interfaces, and thin films)

  • 68.37.-d
68.37.Ef (Scanning tunneling microscopy (including chemistry induced with STM))