论文标题
Au上铁蛋白苯胺分子的低能物理学（111）
Low-energy physics for an iron phthalocyanine molecule on Au(111)
论文作者
论文摘要
由于其独特的特性，已研究了AU（111）表面上的邻苯烷氨酸分子的系统。特别是，可以通过{\ it non-landau} fermi液态扫描分子的位置和施加磁场的几个令人惊讶的结果。费米水平附近的本地化轨道为三个，对称$ z^2 $和两个（几乎）变性的对称$ xz $和$ yz $的（几乎）变性$π$轨道。先前使用数值重归其化组的研究忽略了这些轨道之一，以使问题可处理。在这里，我们使用奴隶玻璃均值场近似进行调查，如果由旋转轨道耦合（SOC）引起的$π$轨道之间的分裂$ s $可以证明此近似值是合理的。我们从3波段制度到2频段的突然过渡，价值为$ s $，约为FE的原子SOC的1/3，证明了系统的2频段模型是合理的。
The system of an iron phthalocyanine molecule on the Au(111) surface, has been studied recently due to its peculiar properties. In particular, several surprising results of scanning tunneling spectroscopy changing the position of the molecule and applying magnetic field can be explained by the {\it non-Landau} Fermi liquid state of a 2-channel spin-1 Kondo model with anisotropy. The localized orbitals near the Fermi level are three, one of symmetry $z^2$ and two (nearly) degenerate $π$ orbitals of symmetry $xz$ and $yz$. Previous studies using the numerical renormalization group neglected one of these orbitals to render the problem tractable. Here we investigate, using a slave-boson mean-field approximation, if the splitting $S$ between $π$ orbitals caused by spin-orbit coupling (SOC) justifies this approximation. We obtain an abrupt transition from a 3-band regime to a 2-band one at a value of $S$ which is about 1/3 of the atomic SOC for Fe, justifying the 2-band model for the system.
