arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1111.6336cond-mat.mtrl-sci
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单轴弹性应变下石墨烯纳米带可调带隙的第一性原理研究

Tunable band gap of graphane nanoribbons under uniaxial elastic strain: a first-principles study

Yan Zhang, Xiaojun Wu, Qunxiang Li, Jinlong Yang

摘要:

在这封信中,我们调查的扶手椅和锯齿形石墨烷纳米带的应变诱导带隙调制的基础上的第一性原理计算。在弹性范围内,带隙随单轴应变呈线性变化,其中石墨烷纳米带隙对压缩变形比拉伸变形更敏感。带隙变形主要来源于应变下石墨烷纳米带的价带边的位移。我们的研究结果暗示了石墨烯纳米带在压力传感器和光电子学应用中的巨大潜力。

英文摘要:

In this Letter, we investigate the strain-induced band-gap modulation of both armchair and zigzag graphane nanoribbons based on the first-principles calculations. Within the elastic range, the band gap changes linearly with the uniaxial strain, where the band-gap of graphane nanoribbonsis more sensitive to compressive than tensile deformation. The band-gap deformation mainly originates from the shift of valence band edge of graphane nanoribbons under stain. Our results imply the great potential of graphane nanoribbons in the pressure sensor and optical electronics applications.

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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