arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.05522cond-mat.mtrl-sci
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Al(111)表面3x3有序硅层的电子结构

Electronic structure of a 3x3-ordered silicon layer on Al(111)

Y. Sato, Y. Fukaya, M. Cameau, A. K. Kundu, D. Shiga, R. Yukawa, K. Horiba, C. -H. Chen, A. Huang, H. -T. Jeng, T. Ozaki, H. Kumigashira, M. Niibe, I. Matsuda

摘要:

用同步辐射角分辨光电子能谱(ARPES)技术研究了Al(111)衬底上Si(Si)层3 × 3有序相的电子结构。一个封闭的费米面起源于线性色散带被确定。对Al(111)表面蜂窝状硅烯的实验原子模型的能带结构计算表明,金属带起源于具有类Dirac锥色散曲线的Al-Si杂化态。Al(111)上的Si层可以作为Xene的模型体系,通过覆盖层-衬底相互作用实现无质量电子系统。

英文摘要:

Electronic structure of the 3x3 ordered-phase of a silicon (Si) layer on Al(111) has been studied by angle resolved photoemission spectroscopy (ARPES) technique using synchrotron radiation and modeled by a trial atomic model. A closed Fermi surface originating from linearly dispersing band is identified. A band structure calculation of a trial atomic model of the honeycomb silicene on Al(111) implies that the metallic band originates from the Al-Si hybrid state that has the Dirac cone-like dispersion curves. The Si layer on Al(111) can be a model system of Xene to realize the massless electronic system through the overlayer-substrate interaction.

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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