Influence of organic ligands on the line shape of the Kondo resonance
Influence of organic ligands on the line shape of the Kondo resonance
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DOI：
10.1103/physrevb.93.155118
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发表时间：
2016-04
影响因子：
3.7
通讯作者：
Jörg Meyer;R. Ohmann;Anja Nickel;C. Toher;Roland Gresser;K. Leo;Da. Ryndyk;F. Moresco;G. Cuniberti
中科院分区：
文献类型：
--
作者：
Jörg Meyer;R. Ohmann;Anja Nickel;C. Toher;Roland Gresser;K. Leo;Da. Ryndyk;F. Moresco;G. Cuniberti
在Ag（100）表面上用扫描隧道光谱和从头计算研究了含Co原子的有机分子的近藤共振。高分辨率的线形图显示了局部非径向对称的法诺因子和近藤振幅变化的证据，揭示了分子配体的强烈影响。我们证明了近藤共振振幅的衰减是由配体轨道与单占Co d（z2）轨道杂化的空间分布决定的，它们一起形成了单占近藤活性轨道。
The Kondo resonance of an organic molecule containing a Co atom is investigated by scanning tunneling spectroscopy and ab initio calculations on a Ag(100) surface. High resolution mapping of the line shape shows evidence of local nonradially symmetric variations of the Fano factor and the Kondo amplitude, revealing a strong influence of the molecular ligand. We show that the decay of the amplitude of the Kondo resonance is determined by the spatial distribution of the ligand's orbital being hybridized with the singly occupied Co d(z2) orbital, forming together the singly occupied Kondo-active orbital.