Conductance switching of a phthalocyanine molecule on an insulating surface

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 mol...

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Bibliographic Details
Published in:Frontiers of physics 2017-08, Vol.12 (4), p.143-146, Article 127303
Main Author: 豆坤鹏 關肇正
Format: Article
Language:English
Subjects:
Approximation
Astronomy
Astrophysics and Cosmology
Atomic
Bilayers
Condensed Matter Physics
Conductance
double-barrier junction
Electron transport
Electrons
Energy
First principles
first-principles calculations
Hydrogen
Molecular
molecular electronics
NaCl bilayer
Optical and Plasma Physics
Particle and Nuclear Physics
Physics
Physics and Astronomy
Recent Progress on Quantum Transport in Nano and Mesoscopic Systems
Research Article
Sodium chloride
Substrates
Switching
tautomerization
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Summary: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.
ISSN:2095-0462
2095-0470
DOI:10.1007/s11467-016-0623-0