Intramolecularly resolved Kondo resonance of high-spin Fe ( II ) -porphyrin adsorbed on Au ( 111 )
Using cryogenic scanning tunneling microscopy, we measured the electronic states and Kondo resonance of single Fe(II)-porphyrin molecules adsorbed on a Au(111) surface with intramolecular resolution. We found that the Fe(II) ion introduces a spin-polarized molecular state near the Fermi level. Tunne...
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| Veröffentlicht in: | Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2015-01, Vol.91 (4), Article 045440 |
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| container_title | Physical review. B, Condensed matter and materials physics |
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| creator | Wang, Weihua Pang, Rui Kuang, Guowen Shi, Xingqiang Shang, Xuesong Liu, Pei Nian Lin, Nian |
| description | Using cryogenic scanning tunneling microscopy, we measured the electronic states and Kondo resonance of single Fe(II)-porphyrin molecules adsorbed on a Au(111) surface with intramolecular resolution. We found that the Fe(II) ion introduces a spin-polarized molecular state near the Fermi level. Tunneling spectroscopy revealed that this state gives rise to Kondo resonance exhibiting characteristics different from those of the Fe(II) spin state. Spin-polarized density functional theory calculations revealed that the molecule was weakly adsorbed on the surface, yet still switches its spin configuration from S = 1 to 2. The spin switching was found to be driven by three effects: a structural distortion of the macrocyclic ring from planar to saddle shaped, a weak chemical bonding between the Fe and the Au surface atom underneath, and weakened Fe-N bonds due to Au(111)-molecule charge transfer. |
| doi_str_mv | 10.1103/PhysRevB.91.045440 |
| format | Article |
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B, Condensed matter and materials physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Weihua</au><au>Pang, Rui</au><au>Kuang, Guowen</au><au>Shi, Xingqiang</au><au>Shang, Xuesong</au><au>Liu, Pei Nian</au><au>Lin, Nian</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Intramolecularly resolved Kondo resonance of high-spin Fe ( II ) -porphyrin adsorbed on Au ( 111 )</atitle><jtitle>Physical review. B, Condensed matter and materials physics</jtitle><date>2015-01-30</date><risdate>2015</risdate><volume>91</volume><issue>4</issue><artnum>045440</artnum><issn>1098-0121</issn><eissn>1550-235X</eissn><abstract>Using cryogenic scanning tunneling microscopy, we measured the electronic states and Kondo resonance of single Fe(II)-porphyrin molecules adsorbed on a Au(111) surface with intramolecular resolution. 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| language | eng |
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| source | American Physical Society Journals |
| subjects | Charge transfer Chemical bonds Condensed matter Distortion Fermi level Iron Mathematical analysis Scanning tunneling microscopy Tunneling |
| title | Intramolecularly resolved Kondo resonance of high-spin Fe ( II ) -porphyrin adsorbed on Au ( 111 ) |
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