Orbital-specific electronic interaction in crystalline films of iron phthalocyanine grown on Au(111) probed by angle-resolved photoemission spectroscopy
Orbital-specific electronic interaction in crystalline films of iron phthalocyanine grown on Au(111) probed by angle-resolved photoemission spectroscopy
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DOI：
10.1039/c7qm00558j
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发表时间：
2018-03
影响因子：
7
通讯作者：
H. Yamane;A. Carlier;N. Kosugi
中科院分区：
文献类型：
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作者：
H. Yamane;A. Carlier;N. Kosugi
采用同步辐射角分辨光谱学（ARPES）研究了在Au（111）表面生长的酞菁铁（FePc）晶体膜的轨道特异性界面和分子间相互作用。在FePc单分子层上的温度相关ARPES测量揭示了分子-金属杂化态的形成以及费米能级以下的近藤共振态。这些界面特定态来源于分子中Fe三维轨道与Au（111）表面电子的电子耦合。对于Au（111）上平铺的FePc多层膜，光子能量依赖的ARPES光谱显示了c2p衍生态的分子间价带色散，而Fe 3d衍生态则没有这种色散，表明Fe 3d自旋态是局域化的。这些轨道特异性相互作用在FePc独特的电子和磁性能中起着至关重要的作用。
The orbital-specific interfacial and intermolecular interactions in crystalline films of iron phthalocyanine (FePc) grown on an Au(111) surface were studied by means of angle-resolved photoemission spectroscopy (ARPES) with synchrotron radiation. The temperature-dependent ARPES measurement on the FePc monolayer reveals the formation of the molecule–metal hybrid state together with the Kondo resonance state below the Fermi level. These interface-specific states are derived from the electronic coupling of the Fe 3d orbital in the molecule with the Au(111) surface electron. For the flat-lying FePc multilayer on Au(111), the photon-energy-dependent ARPES spectra reveal the intermolecular valence-band dispersion for the C 2p-derived state, while the Fe 3d-derived state does not show such dispersion, indicating the localized Fe 3d spin state. These orbital-specific interactions play crucial roles in the unique electronic and magnetic properties of FePc.