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Phase transition and in situ construction of lateral heterostructure of 2D superconducting alpha/beta Mo2C with sharp interface by electron beam irradiation
Liu, Zhibo; Fei, Zeyuan; Xu, Chuan; Jiang, Yixiao; Ma, Xiu-Liang; Cheng, Hui-Ming; Ren, Wencai; Ma, XL; Ren, WC (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
2017-06-14
发表期刊NANOSCALE
ISSN2040-3364
卷号9期号:22页码:7501-7507
摘要Lateral heterostructures of 2D materials have several interesting properties and potential applications, and they are usually fabricated by chemical vapor deposition. However, it still remains a great challenge to fabricate 2D lateral heterostructures with well-controlled patterns and sharp interfaces. Herein, we found that the 2D alpha-Mo2C crystal, a recently emerging 2D superconductor, experiences a phase transition from the alpha phase to beta phase on electron beam irradiation in a transmission electron microscope because of the migration of carbon atoms among the molybdenum octahedrons. Combined with first-principles calculations, the carbon atom migration paths and the corresponding energy barriers were discussed. Utilizing this unique phase transition property of 2D alpha-Mo2C crystal, we demonstrated the precise in situ construction of the lateral heterostructure of 2D superconducting alpha/beta Mo2C with a well-controlled pattern and sharp interface using advanced aberration-corrected scanning transmission electron microscopy.; Lateral heterostructures of 2D materials have several interesting properties and potential applications, and they are usually fabricated by chemical vapor deposition. However, it still remains a great challenge to fabricate 2D lateral heterostructures with well-controlled patterns and sharp interfaces. Herein, we found that the 2D alpha-Mo2C crystal, a recently emerging 2D superconductor, experiences a phase transition from the alpha phase to beta phase on electron beam irradiation in a transmission electron microscope because of the migration of carbon atoms among the molybdenum octahedrons. Combined with first-principles calculations, the carbon atom migration paths and the corresponding energy barriers were discussed. Utilizing this unique phase transition property of 2D alpha-Mo2C crystal, we demonstrated the precise in situ construction of the lateral heterostructure of 2D superconducting alpha/beta Mo2C with a well-controlled pattern and sharp interface using advanced aberration-corrected scanning transmission electron microscopy.
部门归属[liu, zhibo ; fei, zeyuan ; xu, chuan ; jiang, yixiao ; ma, xiu-liang ; cheng, hui-ming ; ren, wencai] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china ; [fei, zeyuan] univ sci & technol china, sch mat sci & engn, hefei 230026, peoples r china
学科领域Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
资助者National Science Foundation of China [51325205, 51290273, 51521091]; Chinese Academy of Sciences [KGZD-EW-303-1, KGZD-EW-T06]
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/78088
专题中国科学院金属研究所
通讯作者Ma, XL; Ren, WC (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
推荐引用方式
GB/T 7714
Liu, Zhibo,Fei, Zeyuan,Xu, Chuan,et al. Phase transition and in situ construction of lateral heterostructure of 2D superconducting alpha/beta Mo2C with sharp interface by electron beam irradiation[J]. NANOSCALE,2017,9(22):7501-7507.
APA Liu, Zhibo.,Fei, Zeyuan.,Xu, Chuan.,Jiang, Yixiao.,Ma, Xiu-Liang.,...&Ren, WC .(2017).Phase transition and in situ construction of lateral heterostructure of 2D superconducting alpha/beta Mo2C with sharp interface by electron beam irradiation.NANOSCALE,9(22),7501-7507.
MLA Liu, Zhibo,et al."Phase transition and in situ construction of lateral heterostructure of 2D superconducting alpha/beta Mo2C with sharp interface by electron beam irradiation".NANOSCALE 9.22(2017):7501-7507.
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