Initial adsorption and kondo resonance of 5,10,15,20-tetrakis(4- bromophenyl)porphyrin-co molecules on ag/si(111) surface studied by low-temperature scanning tunneling microscopy/spectroscopy

Qing Li, Shiro Yamazaki, Toyoaki Eguchi, Howon Kim, Se Jong Kahng, Jing Feng Jia, Qi Kun Xue, Yukio Hasegawa

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4 Citations (Scopus)

Abstract

The initial adsorption and subsequent Kondo resonance of spin-active 5,10,15,20-tetrakis(4-bromophenyl)porphyrin-Co (TBrPP-Co) molecules on a Si(111)-√3×3√ Ag surface have been studied using low-temperature scanning tunneling microscopy/spectroscopy (STM/S). Different from the case on the Cu(111) surface, all the isolated single TBrPP-Co molecules are anchored in a planar conformation with a slight distortion via their four Br atoms bonding with the Ag atoms of the reconstructed surface structure. The Kondo resonance was also successfully observed above the isolated single molecules adsorbed on the metallic surface. Since the semiconducting Si do not have electronic states at the Fermi level, only the surface state electrons contribute to the observed Kondo resonance.

Original languageEnglish
Article number08JB01
JournalJapanese journal of applied physics
Volume48
Issue number8 PART 3
DOIs
Publication statusPublished - 2009 Aug 1
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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