Abstract
The intramolecular structure of a Co-porphyrin molecule adsorbed on Au(111) is studied using scanning tunneling microscopy and spectroscopy. As the energy is swept from -2 to +2eV across Fermi level, the shape of the molecular image dramatically evolves from a two-lobed object to a shape with a bright center and, finally, to a four-lobed object. With the help of first-principles calculations, we explain these distinctive features in terms of the integrated molecular orbitals of a saddle conformation and the contribution of a Kondo state. Based on the molecular structure and the orbitals, we explain why the modification in the electronic states of the molecules by the presence of the substrate is relatively modest.
| Original language | English |
|---|---|
| Article number | 245402 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 80 |
| Issue number | 24 |
| DOIs | |
| Publication status | Published - 2009 Dec 3 |
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ASJC Scopus subject areas
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
Cite this
Mapping the electronic structures of a metalloporphyrin molecule on Au(111) by scanning tunneling microscopy and spectroscopy. / Kim, Howon; Son, Won Joon; Jang, Won Jun; Yoon, Jong Keon; Han, Seungwu; Kahng, Se-Jong.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 80, No. 24, 245402, 03.12.2009.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Mapping the electronic structures of a metalloporphyrin molecule on Au(111) by scanning tunneling microscopy and spectroscopy
AU - Kim, Howon
AU - Son, Won Joon
AU - Jang, Won Jun
AU - Yoon, Jong Keon
AU - Han, Seungwu
AU - Kahng, Se-Jong
PY - 2009/12/3
Y1 - 2009/12/3
N2 - The intramolecular structure of a Co-porphyrin molecule adsorbed on Au(111) is studied using scanning tunneling microscopy and spectroscopy. As the energy is swept from -2 to +2eV across Fermi level, the shape of the molecular image dramatically evolves from a two-lobed object to a shape with a bright center and, finally, to a four-lobed object. With the help of first-principles calculations, we explain these distinctive features in terms of the integrated molecular orbitals of a saddle conformation and the contribution of a Kondo state. Based on the molecular structure and the orbitals, we explain why the modification in the electronic states of the molecules by the presence of the substrate is relatively modest.
AB - The intramolecular structure of a Co-porphyrin molecule adsorbed on Au(111) is studied using scanning tunneling microscopy and spectroscopy. As the energy is swept from -2 to +2eV across Fermi level, the shape of the molecular image dramatically evolves from a two-lobed object to a shape with a bright center and, finally, to a four-lobed object. With the help of first-principles calculations, we explain these distinctive features in terms of the integrated molecular orbitals of a saddle conformation and the contribution of a Kondo state. Based on the molecular structure and the orbitals, we explain why the modification in the electronic states of the molecules by the presence of the substrate is relatively modest.
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U2 - 10.1103/PhysRevB.80.245402
DO - 10.1103/PhysRevB.80.245402
M3 - Article
VL - 80
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 24
M1 - 245402
ER -