A high degree of tunability and versatility of organic chemistry has paved the way toward molecular engineering of electronic and spintronic devices. Here, we report molecular spin doping of a Pt film, the key material in spin orbitronics. The molecular spin doping using a monolayer of a metal terpyridine complex allows to control the interaction between the conduction electrons and localized magnetic moments in the Pt film. The interaction was probed by measuring the weak antilocalization, which demonstrates enhanced magnetic impurity scattering induced by the molecular spin doping. By measuring the spin–orbit torque generated by Pt doped with molecular spins, we found that the spin Hall effect is robust against the magnetic impurity scattering, showing that the significant spin–orbit coupling dominates the charge-to-spin conversion in Pt. These results demonstrate that the molecular spin doping paves the way to explore spin-orbitronics phenomena.

中文翻译：

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分子自旋掺杂的Pt薄膜的弱抗定位和自旋霍尔效应

有机化学的高度可调性和多功能性为电子和自旋电子设备的分子工程学铺平了道路。在这里，我们报告了自旋orbitronics中的关键材料Pt膜的分子自旋掺杂。使用金属三联吡啶络合物的单分子层进行的分子自旋掺杂可以控制Pt膜中导电电子与局部磁矩之间的相互作用。通过测量弱的抗局部性来探测相互作用，这表明分子自旋掺杂引起的磁杂质散射增强。通过测量掺有分子自旋的Pt产生的自旋轨道转矩，我们发现自旋霍尔效应对磁杂质散射具有鲁棒性，表明显着的自旋轨道耦合支配了Pt中的电荷自旋转换。