IPCMS UMR 7504 CNRS, Université de Strasbourg, 23 rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France.
Phys Rev Lett. 2010 Aug 13;105(7):077201. doi: 10.1103/PhysRevLett.105.077201.
We have studied the repercussion of the molecular adsorption mechanism on the electronic properties of the interface between model nonmagnetic or magnetic metallic surfaces and metallo-organic phthalocyanines molecules (Pcs). Our intertwined x-ray absorption spectroscopy experiments and computational studies reveal that manganese Pc (MnPc) is physisorbed onto a Cu(001) surface and retains the electronic properties of a free molecule. On the other hand, MnPc is chemisorbed onto Co(001), leading to a dominant direct exchange interaction between the Mn molecular site and the Co substrate. By promoting an interfacial spin-polarized conduction state on the molecule, these interactions reveal an important lever to tailor the spintronic properties of hybrid organic-metallic interfaces.
我们研究了分子吸附机制对模型非磁性或磁性金属表面与金属有机酞菁分子（Pcs）之间界面电子性质的影响。我们的 X 射线吸收光谱实验和计算研究揭示，锰酞菁（MnPc）物理吸附在 Cu（001）表面上，并保持自由分子的电子性质。另一方面，MnPc 化学吸附在 Co（001）上，导致 Mn 分子位点和 Co 衬底之间存在主导的直接交换相互作用。通过促进分子上的界面自旋极化传导态，这些相互作用揭示了一种重要的手段，可以调整杂化有机-金属界面的自旋电子性质。
