Evolution of Kondo resonance from a single impurity molecule to the two-dimensional lattice.
Evolution of Kondo resonance from a single impurity molecule to the two-dimensional lattice.
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DOI：
10.1103/physrevlett.106.187201
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发表时间：
2011-05
影响因子：
8.6
通讯作者：
N. Tsukahara;S. Shiraki;Saika Itou;N. Ohta;N. Takagi;M. Kawai
中科院分区：
文献类型：
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作者：
N. Tsukahara;S. Shiraki;Saika Itou;N. Ohta;N. Takagi;M. Kawai
用扫描隧道显微镜研究了近藤共振态从单一的铁(II)酞菁分子到金(111)面上的二维晶格的逐次光谱演化。一个尖锐的近藤峰出现在单杂质区，随着晶格的建立，该峰变宽并分裂。基于分子自旋之间的近藤效应和Rudermann-Kittel-Kasuya-Yosida耦合的竞争，讨论了光谱演化的起源和晶格的电子基态。
The successive spectral evolution of the Kondo resonance state was investigated from a single iron(II) phthalocyanine molecule to the two-dimensional lattice on Au(111) by interrogating the individual molecules with a scanning tunneling microscope. A sharp Kondo peak appears in the single-impurity regime, which broadens and splits as the lattice builds up. The origin of spectral evolution together with the electronic ground state of the lattice are discussed based on the competition of the Kondo effect and Rudermann-Kittel-Kasuya-Yosida coupling between the molecular spins.