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首页> 外文期刊>Physica status solidi, B. Basic research >Heat dissipation and its relation to molecular orbital energies in single-molecule junctions
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Heat dissipation and its relation to molecular orbital energies in single-molecule junctions

机译:单分子结中的散热及其与分子轨道能量的关系

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We present a theoretical study of the heat dissipation in single-molecule junctions. In order to investigate the heat dissipation in the electrodes and the relationship between the transmission spectra and the electronic structures, we consider a toy model in which electrodes are linked by a two-level molecular bridge. By using the Landauer approach, we show how heat dissipation in the electrodes of a molecular junction is related to its transmission characteristics. We show that in general, heat is not equally dissipated in the left and right electrodes of the junction and it depends on the bias polarity and the positions of the molecule's energy levels with respect to the Fermi level. Also, we exploit the C-60 molecule as a junction and the results show a good agreement with the toy model. Our results for the heat dissipation are remarkable in the sense that they can be used to detect which energy levels of a junction are dominated in the transport process. (C) 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
机译:我们目前对单分子结中的散热进行理论研究。为了研究电极中的散热以及透射光谱和电子结构之间的关系,我们考虑了一个玩具模型,其中电极通过两级分子桥连接。通过使用Landauer方法,我们展示了分子结的电极中的散热与传输特性之间的关系。我们表明,一般来说,结的左右电极中的热量不均等地散发,它取决于偏压极性和分子能级相对于费米能级的位置。此外,我们利用C-60分子作为连接点,结果表明与玩具模型有很好的一致性。从某种意义上说,我们的散热结果非常出色,可以用于检测结的哪些能级在运输过程中占主导地位。 (C)2015 WILEY-VCH Verlag GmbH&Co.KGaA,Weinheim

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