使用连接有机分子邻近耦合到金纳米颗粒的铌薄膜的增加的超导性transition temperature
Increased superconducting transition temperature of a niobium thin-film proximity-coupled to gold nanoparticles using linking organic molecules
摘要：
的超导临界温度，TC，薄Nb膜显着修改时，金纳米粒子（NPs）化学连接到Nb膜，与一致的增强时，使用3 nm长的乙硅烷连接分子。对于某些接头长度和NP大小，TC增加高达10%。当纳米颗粒与非连接分子物理吸附时，没有观察到变化。在低于TC的连接的NP上获得的电子隧穿光谱通常表现出零偏置峰。我们将这些结果归因于由有机连接体介导的Nb和NP中的电子耦合配对机制。
英文摘要：
The superconducting critical temperature, TC, of thin Nb films is significantly modified when gold nanoparticles (NPs) are chemically linked to the Nb film, with a consistent enhancement when using 3 nm long disilane linker molecules. The TC increases by up to 10% for certain linker length and NPs size. No change is observed when the nanoparticles are physisorbed with non-linking molecules. Electron tunneling spectra acquired on the linked NPs below TC typically exhibit zero-bias peaks. We attribute these results to a pairing mechanism coupling electrons in the Nb and the NPs, mediated by the organic linkers.
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