Kondo Effect in Organic Conductors

本研究的目的是寻找导电聚合物中的近藤效应。为此，我们使用了重铁<Cl_3>掺杂的聚乙炔，这是导电的，并具有局部磁矩。为了观察低温下纤维内部的金属导电性，我们使用了VSC方法。我们发现金属的电导率低至1.9 K，与&lt;T^（-2）&gt;成正比。但是我们没有观察到近藤效应的电阻率最小特性。除了Fe<Cl_3>，我们还尝试了As<F_5>和HCl<SO_3>，它们没有局域化的时刻。虽然在这些情况下观察到的电阻率最小值，这可能不是由于近藤效应，而是归因于原纤维之间的屏障效应。

This research was undertaken to look for the Kondo effect in conducting polymers. To this end we used heavily Fe <Cl_3> -doped polyacetylene which is conducting and has a localized magnetic moment. To observe the metallic conductivity inside of fibrils at low temperatures we made use of the VSC method. We found the metallic conduction down to 1.9 K which is proportional to <T^(-2)> . But we did not observe the resistivity minimum characteristic of the Kondo effect. Besides Fe <Cl_3> , we tried As <F_5> and HCl <SO_3> which have no localized moments. Although the resistivity minimum was observed in these cases, these could not be due to the Kondo effect, but was ascribed to the barrier effect between fibrils.