Van der Waals Heteroepitaxial Growth of Monolayer Sb in a Puckered Honeycomb Structure,Advanced Materials

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Van der Waals Heteroepitaxial Growth of Monolayer Sb in a Puckered Honeycomb Structure
Advanced Materials ( IF 27.4 ) Pub Date : 2018-12-05 , DOI: 10.1002/adma.201806130
Zhi-Qiang Shi ₁ , Huiping Li _{2,

3} , Qian-Qian Yuan ₁ , Ye-Heng Song ₁ , Yang-Yang Lv ₄ , Wei Shi ₁ , Zhen-Yu Jia ₁ , Libo Gao ₁ , Yan-Bin Chen ₁ , Wenguang Zhu _{2,

3} , Shao-Chun Li _{1,

5}

Affiliation

Atomically thin 2D crystals have gained tremendous attention owing to their potential impact on future electronics technologies, as well as the exotic phenomena emerging in these materials. Monolayers of α‐phase Sb (α‐antimonene), which shares the same puckered structure as black phosphorous, are predicted to be stable with precious properties. However, the experimental realization still remains challenging. Here, high‐quality monolayerα‐antimonene is successfully grown, with the thickness finely controlled. The α‐antimonene exhibits great stability upon exposure to air. Combining scanning tunneling microscopy, density functional theory calculations, and transport measurements, it is found that the electron band crossing the Fermi level exhibits a linear dispersion with a fairly small effective mass, and thus a good electrical conductivity. All of these properties make the α‐antimonene promising for future electronic applications.

中文翻译：

范德华折叠蜂窝结构中单层锑的异质外延生长

原子薄的2D晶体由于其对未来电子技术的潜在影响以及这些材料中出现的奇异现象而受到了广泛的关注。预计与黑磷具有相同褶皱结构的α相Sb（α-锑烯）单层是稳定的，并具有宝贵的性能。但是，实验实现仍然具有挑战性。在这里，成功地生长了高质量的单层α-锑烯，其厚度得到了精细控制。暴露于空气中时，α-锑烯具有很高的稳定性。结合扫描隧道显微镜，密度泛函理论计算和输运测量，发现穿过费米能级的电子带表现出线性分散，具有相当小的有效质量，因此具有良好的导电性。

更新日期：2018-12-05

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