Switching Molecular Kondo Effect via Supramolecular Interaction

Switching Molecular Kondo Effect via Supramolecular Interaction

We apply supramolecular assembly to control the adsorption configuration of Co-porphyrin molecules on Au(111) and Cu(111) surfaces. By means of cryogenic scanning tunneling microscopy, we reveal that the Kondo effect associated with the Co center is absent or present in different supramolecular syst...

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Veröffentlicht in:ACS nano 2015-12, Vol.9 (12), p.12521-12528
Hauptverfasser: Zhang, Qiushi, Kuang, Guowen, Pang, Rui, Shi, Xingqiang, Lin, Nian
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container_issue 12
container_start_page 12521
container_title ACS nano
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creator Zhang, Qiushi
Kuang, Guowen
Pang, Rui
Shi, Xingqiang
Lin, Nian
description We apply supramolecular assembly to control the adsorption configuration of Co-porphyrin molecules on Au(111) and Cu(111) surfaces. By means of cryogenic scanning tunneling microscopy, we reveal that the Kondo effect associated with the Co center is absent or present in different supramolecular systems. We perform first-principles calculations to obtain spin-polarized electronic structures and compute the Kondo temperatures using the Anderson impurity model. The switching behavior is traced to varied molecular adsorption heights in different supramolecular structures. These findings unravel that a competition between intermolecular interactions and molecule–substrate interactions subtly regulates the molecular Kondo effect in supramolecular systems.
doi_str_mv 10.1021/acsnano.5b06120
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title Switching Molecular Kondo Effect via Supramolecular Interaction
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