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Frontiers of Physics

ISSN 2095-0462

ISSN 2095-0470(Online)

CN 11-5994/O4

Postal Subscription Code 80-965

2018 Impact Factor: 2.483

Front. Phys.    2017, Vol. 12 Issue (4) : 127303    https://doi.org/10.1007/s11467-016-0623-0
RESEARCH ARTICLE
Conductance switching of a phthalocyanine molecule on an insulating surface
Kun Peng Dou (豆坤鵬)1,Chao-Cheng Kaun (關肇正)1,2()
1. Research Center for Applied Sciences, Academia Sinica, Taipei 11529
2. Department of Physics, National Tsing-Hua University, Hsinchu 30013
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Abstract

We study the electron transport through the double-barrier junction consisted of the phthalocyanine molecule adsorbed on a NaCl bilayer on a metal substrate and the STM tip from first principles. The hydrogen tautomerization reaction happened in the molecule changes the spatial extensions of the molecular π orbitals under the tip, leading to junction conductance switching. Shifting the molecule to locate on different ions also varies the conductance. The transport channels of the tautomers on different adsorbed sites are identified.

Keywords first-principles calculations      double-barrier junction      NaCl bilayer      tautomerization      molecular electronics     
Corresponding Author(s): Chao-Cheng Kaun (關肇正)   
Issue Date: 17 October 2016
 Cite this article:   
Kun Peng Dou (豆坤鵬),Chao-Cheng Kaun (關肇正). Conductance switching of a phthalocyanine molecule on an insulating surface[J]. Front. Phys. , 2017, 12(4): 127303.
 URL:  
https://academic.hep.com.cn/fop/EN/10.1007/s11467-016-0623-0
https://academic.hep.com.cn/fop/EN/Y2017/V12/I4/127303
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