Lead phthalocyanine (PbPc), a nonplanar molecule, is studied on Pb(100) by scanning tunneling spectroscopy. A rigid shift of the molecular orbitals is found between molecules with the central Pb ion pointing toward $(\mathrm{PbPc}\downarrow )$ or away from $(\mathrm{PbPc}\uparrow )$ the substrate and is understood from the interaction between the molecules and their image charges. Within the superconducting energy gap, Yu-Shiba-Rusinov (YSR) resonances are observed for $\mathrm{PbPc}\uparrow$ molecules in islands, indicating the presence of a magnetic moment. Such bound states are not present on $\mathrm{PbPc}\downarrow$ molecules, nor on isolated $\mathrm{PbPc}\uparrow$ or molecules that have lost the Pb ion during deposition $\left({\mathrm{H}}_0\mathrm{Pc}\right)$. The YSR energies vary depending on the orientation and type of the molecular neighbors. We analyze the role of the out-of-plane electrostatic dipole moment of PbPc.

中文翻译：

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在 Pb(100) 上制备闭壳铅酞菁顺磁性

通过扫描隧道光谱法对 Pb(100) 进行了研究，研究了铅酞菁 (PbPc) 是一种非平面分子。分子轨道发生刚性移动，中心 Pb 离子指向$（\mathrm{铅铅}\downarrow ）$或远离$（\mathrm{铅铅}\uparrow ）$基底，可以从分子与其图像电荷之间的相互作用来理解。在超导能隙内，观察到 Yu-Shiba-Rusinov (YSR) 共振$\mathrm{铅铅}\uparrow$岛屿中的分子，表明磁矩的存在。这种束缚态不存在于$\mathrm{铅铅}\downarrow$分子，也不在孤立的$\mathrm{铅铅}\uparrow$或在沉积过程中失去 Pb 离子的分子$（{\mathrm{H}}_0\mathrm{个人电脑}）$。 YSR 能量根据相邻分子的方向和类型而变化。我们分析了 PbPc 面外静电偶极矩的作用。