M. Semenov, V. Krevchik, D. Filatov, D. Antonov, A. V. Shorokhov, A. Shkurinov, I. A. Ozheredov, P. V. Krevchik, A. Razumov, A. S. Kotov, I. Antonov, I. Semenov
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引用次数: 0
摘要
摘要:本文在原子力显微镜/扫描隧道显微镜(AFM/STM)组合系统中,实验研究了在弱耗散极限下,在一维耗散隧道情况下,各种金属纳米粒子(Ni, Co, Fe) (Ni, Co, Fe)的隧道电流-电压(I-V)曲线特征。结果表明,对于单个隧穿I-V曲线,在其中一个极性处观察到一个单峰。在合成极性变化的金属纳米颗粒的过程中,可以合成环形结构,而不是纳米簇(以“生长”Ni-NPs为例)。对一维耗散隧道效应的研究使作者提出的在AFM/STM组合系统中控制量子点生长的方法成为可能。实验结果与理论结果在定性上是一致的,这使得我们可以假设实验观察到宏观耗散隧穿效应的可能性,从而证实了A. J. Leggett, A. I. Larkin, Yu的开创性作品中提出的假设。N. Ovchinnikov和其他作者。
Features of tunneling current-voltage characteristics in dielectric films with Ni, Fe and Co nanoparticles, investigated by conductive AFM and within the framework of the theory of 1D-dissipative tunneling
A BSTRACT In this work, we have experimentally investigated the features of tunneling current-voltage (I–V) curves in the case of 1D-dissipative tunneling in the limit of weak dissipation for various both synthesized (and in the process of synthesis) metallic nanoparticles (NPs) (Ni, Co, Fe) in a combined atomic force mi-croscope/scanning tunneling microscope (AFM/STM) system in an external electric field. It is shown that for individual tunneling I–V curves, a single peak is observed at one of the polarities. In the process of synthesizing metallic nanoparticles with a change in polarity, instead of nanoclusters, it is possible to synthesize toroidal structures (shown by the example of “growing” Ni-NPs). The investigated effects of 1D-dissipative tunneling made it possible to develop the author’s method of controlled growth of quantum dots in a combined AFM/STM system. A qualitative agreement was obtained between the experimental and theoretical results, which allows us to assume the possibility of experimental observation of the macroscopic dissipative tunneling effects and thereby confirm the hypothesis expressed in the pioneering works of A. J. Leggett, A. I. Larkin, Yu. N. Ovchinnikov and other authors.