金属表面吸附分子输运中的近藤效应：从Fano谷到近藤峰
Kondo effect in transport through molecules adsorbed on metal surfaces: from Fano dips to Kondo peaks
摘要：
在最近的STM实验中观察到的近藤效应分别通过吸附在Au（111）和Cu（111）表面上的CoPc和TBrPP-Co分子的传输，在一个简单的模型的框架内进行了讨论（Phys. Rev. Lett. { \bf 97}，076806（2006））。结果表明，在近藤政权，并通过改变适当的模型参数，它是可能的，以产生一个交叉从电导近藤峰（CoPc）的电导法诺浸（TBrPP-Co）。在TBrPP-Co/Cu（111）的情况下，我们表明，该模型再现了Fano凹陷形状的变化，Kondo温度的升高，以及当最近邻分子的数量减少时，凹陷最小值向更高能量的偏移。这些特征与实验观察结果一致，表明我们的简单模型包含了这种复杂分子传输特性的基本物理学。
英文摘要：
The Kondo effect observed in recent STM experiments on transport through CoPc and TBrPP-Co molecules adsorbed on Au(111) and Cu(111) surfaces, respectively, is discussed within the framework of a simple model (Phys. Rev. Lett. {\bf 97}, 076806 (2006)). It is shown that, in the Kondo regime and by varying the adequate model parameters, it is possible to produce a crossover from a conductance Kondo peak (CoPc) to a conductance Fano dip (TBrPP-Co). In the case of TBrPP-Co/Cu(111) we show that the model reproduces the changes in the shape of the Fano dip, the raising of the Kondo temperature and shifting to higher energies of the dip minimum when the number of nearest neighbors molecules is lowered. These features are in line with experimental observations indicating that our simple model contains the essential physics underlying the transport properties of such complex molecules.
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