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arXiv 1002.0964cond-mat.mes-hallcond-mat.mtrl-sci
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单Phenalenyl分子多末端电子输运的理论研究

Multi-terminal Electron Transport Through Single Phenalenyl Molecule: A Theoretical Study

Paramita Dutta, Santanu K. Maiti, S. N. Karmakar

摘要:

我们做参数计算来阐明多终端电子输运性能通过一个分子系统,其中一个单一的phenalenyl分子连接到半无限的一维金属铅。一个形式主义的基础上的格林函数技术用于计算,而模型描述的紧束缚哈密顿量。我们从电导、反射几率以及电流-电压特性等方面探讨了其输运性质。最重要的特点,我们阐明的是,所有这些特性是非常敏感的位置,引线连接,也是分子到引线耦合强度。其他铅的存在也有显着的影响,这些运输性能。我们研究这些现象的两个,三个和四个终端的分子系统。我们的数值研究可用于设计定制的分子电子器件。

英文摘要:

We do parametric calculations to elucidate multi-terminal electron transport properties through a molecular system where a single phenalenyl molecule is attached to semi-infinite one-dimensional metallic leads. A formalism based on the Green's function technique is used for the calculations while the model is described by tight-binding Hamiltonian. We explore the transport properties in terms of conductance, reflection probability as well as current-voltage characteristic. The most significant feature we articulate is that all these characteristics are very sensitive to the locations where the leads are connected and also the molecule-to-lead coupling strengths. The presence of other leads also has a remarkable effect on these transport properties. We study these phenomena for two-, three- and four-terminal molecular systems. Our numerical study may be utilized in designing tailor-made molecular electronic devices.

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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