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arXiv 2402.06172cond-mat.mes-hall
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富勒烯基分子结中的热输运:分子动力学模拟

Thermal transport in fullerene-based molecular junctions: Molecular dynamics simulations

Joanna Li, Jonathan J. Wang, Dvira Segal

AI总结:

本研究通过经典分子动力学模拟,采用三种方法计算富勒烯单体、二聚体和三聚体分子结的热导,发现三聚体结热导显著降低,为设计低热导热电结提供参考。

摘要:

我们通过采用经典分子动力学模拟,研究了富勒烯基单分子结的声子热输运。通过三种不同的分子动力学方法计算了富勒烯单体、二聚体和三聚体的热导,其中一种方法遵循平衡动力学,另外两种使用非平衡模拟方法。我们讨论了模拟技术的技术细节,并表明它们对热导的预测是一致的。我们的模拟揭示,富勒烯单体和二聚体结的热导相似,而三聚体结的热导显著降低。这项研究可能有助于设计高性能热电结,其中低热导是期望的。

英文摘要:

We investigate phonon thermal transport of fullerene-based single-molecule junctions by employing classical molecular dynamics simulations. The thermal conductances of fullerene monomers, dimers, and trimers are computed through three distinct molecular dynamics methods, by following the equilibration dynamics in one method, and using two other nonequilibrium simulation methods. We discuss technical aspects of the simulation techniques, and show that their predictions for the thermal conductance agree. Our simulations reveal that the thermal conductance of fullerene monomer and dimer junctions are similar, yet the thermal conductance of trimer junctions is significantly reduced. This study could assist in the design of high-performing thermoelectric junctions, where low thermal conductance is desired.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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