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arXiv 1306.6551cond-mat.stat-mech
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类石墨烯结构中的排斥和输运驱动流

Driven flow with exclusion and transport in graphene-like structures

R. B. Stinchcombe, S. L. A. de Queiroz, M. A. G. Cunha, Belita Koiller

摘要:

完全不对称的简单排斥过程(TASEP),一个众所周知的模型,在其严格的一维(链)的版本,被推广到圆柱(纳米管)和带状(纳米管)的几何形状。一个平均场的理论描述给出了非常窄的带(“项链”),和纳米管。对于特定的键transmittrates配置,并为各种边界条件下,理论预测这些结构和链(上的子晶格)之间的等效稳态行为。这是验证数值模拟,以优异的精度,通过评估稳态电流。我们也数值处理一般宽度的带状物。我们研究这个模型的充分性,以描述碳纳米管和纳米带,或专门设计的量子点阵列的电子输运。

英文摘要:

The totally asymmetric simple exclusion process (TASEP), a well-known model in its strictly one-dimensional (chain) version, is generalized to cylinder (nanotube) and ribbon (nanoribbon) geometries. A mean-field theoretical description is given for very narrow ribbons ("necklaces"), and nanotubes. For specific configurations of bond transmissivity rates, and for a variety of boundary conditions, theory predicts equivalent steady state behavior between (sublattices on) these structures and chains. This is verified by numerical simulations, to excellent accuracy, by evaluating steady-state currents. We also numerically treat ribbons of general width. We examine the adequacy of this model to the description of electronic transport in carbon nanotubes and nanoribbons, or specifically-designed quantum dot arrays.

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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