arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1503.00200cond-mat.mtrl-sci
收藏

单层黑磷的各向异性杨氏模量:除扶手椅和锯齿形外的第三主方向

Anisotropic Young's Modulus for Single-Layer Black Phosphorus: The Third Principle Direction Besides Armchair and Zigzag

Jin-Wu Jiang

摘要:

利用价力场模型推导出了单层黑磷的杨氏模量的解析表达式。通过对杨氏模量方向依赖性的分析,发现了除扶手椅方向和锯齿形方向外的第三主方向,其方向角φ_tp = 0.268pi。最大杨氏模量值在第三主方向上。更具体地,在扶手椅方向、Z字形方向和第三主方向上的杨氏模量分别为52.2N/m、85.4N/m和111.4N/m。这一新的理论方向对今后讨论单层黑磷的其它各向异性性质具有重要意义。

英文摘要:

We derive an analytic formula for the Young's modulus in single-layer black phosphorus using the valence force field model. By analyzing the directional dependence for the Young's modulus, we explore the third principle direction with direction angle phi_tp = 0.268pi besides armchair and zigzag directions. The maximum Young's modulus value is in the third principle direction. More specifically, the Young's modulus is 52.2 N/m, 85.4 N/m, and 111.4 N/m in the armchair direction, zigzag direction, and the third principle direction, respectively. This new principle direction is of significance for future discussions of other anisotropic properties in the single-layer black phosphorus.

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。

↑