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Prevalence of Coulomb blockade in electro-migrated junctions with conjugated and non-conjugated molecules

机译:共轭和非共轭分子在电迁移结中的库仑阻断反应盛行

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摘要

Conduction of electro-migration gap junctions coated with various organic molecules is studied to expose the prevalence of different transport processes. The principal comparison made here is between molecules with conjugated versus non-conjugated backbones. Coulomb blockade (CB) is observed in all junctions, including bare junctions and those with non-conjugated molecules, but at significantly lower prevalence than for conjugated molecules. Importantly, CB with high charging energy is seen almost exclusively on junctions with conjugated molecules. These results indicate that CB is ubiquitous in molecular electro-migration junction transport with prevalence that should be characterized using large numbers of samples.
机译:研究了涂覆有各种有机分子的电迁移间隙连接的传导,以揭示不同传输过程的普遍性。在此进行的主要比较是在具有共轭骨架和非共轭骨架的分子之间。在所有连接处都可观察到库仑封锁(CB),包括裸露连接处和非共轭分子连接处,但患病率明显低于共轭分子。重要的是,具有高充电能量的CB几乎只能在与共轭分子的连接处看到。这些结果表明,CB在分子电迁移结运输中普遍存在,应使用大量样品进行表征。

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