arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1704.04897cond-mat.mes-hall
收藏

含线缺陷扶手椅型石墨烯纳米带的能带计算和局域态分析

The band calculation and local state analysis for armchair graphene-like nanoribbons with line defects

Yang Xie, Zhijian Hu, Wenhao Ding, Hang Xie

摘要:

在本文中,我们提出了一种分析方法来计算任意线缺陷或单轴应变的扶手椅型石墨烯纳米带的能带结构。该模型是基于紧束缚模型和驻波假设的扶手椅型纳米带。它给出了准确的频带结果为大型超原胞系统。在这种方法中,我们分析了石墨烯和氮化硼纳米带中的线缺陷附近的不同局域态。我们还推导了半无限石墨烯纳米管中的局域态的解析表达式,通过这种方法和传输矩阵技术。给出了半无限纳米带中局域态的判据条件。

英文摘要:

In this paper we propose an analytical method to calculate the band structures of graphene-like nanoribbons of the armchair type with arbitrary line defects or uniaxial strains. The model is based on the tight-binding model and the standing wave assumption for the armchair nanoribbons. It gives accurate band results for large supercell systems. Within this method, we analyze different local states near the line defect in the graphene and boron-nitride nanoribbons. We also derive the analytical expression for the local states in a semi-infinite graphene nanoribbon by this method and the transfer matrix technique. The criteria condition for the local states in the semi-infinite nanoribbons is also given.

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。

↑