| GaAs(001)薄膜的表面形貌相变和表面重构 |
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| 引用本文： | 刘雪飞,吕兵,罗子江,王继红,郭祥,杨秀璋. GaAs(001)薄膜的表面形貌相变和表面重构[J]. 功能材料, 2021, 52(3): 3098-3103 |
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| 作者姓名： | 刘雪飞 吕兵 罗子江 王继红 郭祥 杨秀璋 |
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| 作者单位： | 贵州师范大学物理与电子科学学院,贵阳550025;贵州财经大学信息学院,贵阳550025;贵州大学大数据与信息工程学院,贵阳550025 |
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| 基金项目： | 国家自然科学基金资助项目(11664005);贵州省科技计划资助项目(黔科合基础〔2019〕1041号,黔科合基础〔2020〕1Y021,黔科合基础〔2020〕1Y279)。 |
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| 摘 要： | 从原子级平坦的 GaAs(001)-β2(2×4)重构表面出发,结合 Reflection High Energy Electron Diffrac-tion(RHEED)衍射图像演变和不同尺度的Scanning tunneling microscope(STM)实空间扫描图像,获取GaAs(001)薄膜表面形貌相变和...
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| 关 键 词： | GaAs(001) 形貌相变 表面重构 RHEED STM |
Research on relationship between morphologiesphase transition and surface reconstructions of GaAs(001)films |
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| LIU Xuefei,LV Bing,LUO Zijiang,WANG Jihong,GUO Xiang,YANG Xiuzhang. Research on relationship between morphologiesphase transition and surface reconstructions of GaAs(001)films[J]. Journal of Functional Materials, 2021, 52(3): 3098-3103 |
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| Authors: | LIU Xuefei LV Bing LUO Zijiang WANG Jihong GUO Xiang YANG Xiuzhang |
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| Affiliation: | (College of Physics and Electronics Science, Guizhou Normal University, Guiyang, 550025, China;College of Information, Guizhou University of Finance and Economics, Guiyang, 550025, China;College of Big Data and Information Engineering, Guizhou University, Guiyang 550025, China) |
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| Abstract: | Starting with reconstructed atomic-level flat GaAs(001)-β2(2×4)surface,by combining reflection high energy electron diffraction(RHEED)diffraction and different scales of scanning tunneling microscope(STM)real space scanning images,this paper has firstly obtained critical information about the morphology transformation and reconstruction of GaAs(001)surface.Besides,the relationship between surface morphologies phase transition and surface reconstructions of GaAs(001)is further investigated.The results show that the phase transition of surface morphologies are mainly drove by the variation of surface reconstruction.The surface morphologies of GaAs(001)composed of a single surface reconstruction is more easily in an ordered flat phase.The GaAs(001)surface pre-rough phase is formed by mixing two identically or two approximately reconstructed unit cells.In contrast,surface morphologies of GaAs(001)would be in a rough phase when the surface is formed by two different types of surface reconstructions.Thus,it can be concluded that the surface reconstructions are the microscopically underlying mechanism of the surface morphologies phase transition,and the surface morphologies phase transitions are the macroscopically external manifestation of surface reconstructions. |
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| Keywords: | GaAs(001) morphologies phase transition surface reconstructions RHEED STM |
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