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Strongly Coupled High-Quality Graphene/2D Superconducting Mo2C Vertical Heterostructures with Aligned Orientation
Xu, Chuan; Song, Shuang; Liu, Zhibo; Chen, Long; Wang, Libin; Fan, Dingxun; Kang, Ning; Ma, Xiuliang; Cheng, Hui-Ming; Ren, Wencai; Ren, WC (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China.; Kang, N (reprint author), Peking Univ, Beijing Key Lab Quantum Devices, Key Lab Phys & Chem Nanodevices, Beijing 100871, Peoples R China.; Kang, N (reprint author), Peking Univ, Dept Elect, Beijing 100871, Peoples R China.
2017-06-01
发表期刊ACS NANO
ISSN1936-0851
卷号11期号:6页码:5906-5914
摘要Vertical heterostructures of two-dimensional (2D) crystals have led to the observations of numerous exciting physical phenomena and presented the possibilities for technological applications, which strongly depend on the quality, interface, relative alignment, and interaction of hybrids of graphene and superconductors offer a very the neighboring 2D crystals. The heterostructures or interesting platform to study mesoscopic superconductivity and the interplay of the quantum Hall effect with superconductivity. However, so far the heterostructures of graphene and 2D superconductors are fabricated by stacking, and consequently suffer from random relative alignment, weak interfacial interaction, and unavoidable interface contaminants. Here we report the direct growth of high-quality graphene/2D superconductor (nonlayered ultrathin alpha-Mo2C crystal) vertical heterostructures with uniformly well-aligned lattice orientation and strong interface coupling by chemical vapor deposition. In the heterostructure, both graphene and 2D alpha-Mo2C crystal show no defect, and the graphene is strongly compressed. Different from the previously reported graphene/superconductor heterostructures or hybrids, the strong interface coupling leads to a phase diagram of superconducting transition with multiple voltage steps being observed in the transition regime. Furthermore, we demonstrate the realization of highly transparent Josephson junction devices based on these strongly coupled high-quality heterostructures, in which a clear magnetic-field-induced Fraunhofer pattern of the critical supercurrent is observed.; Vertical heterostructures of two-dimensional (2D) crystals have led to the observations of numerous exciting physical phenomena and presented the possibilities for technological applications, which strongly depend on the quality, interface, relative alignment, and interaction of hybrids of graphene and superconductors offer a very the neighboring 2D crystals. The heterostructures or interesting platform to study mesoscopic superconductivity and the interplay of the quantum Hall effect with superconductivity. However, so far the heterostructures of graphene and 2D superconductors are fabricated by stacking, and consequently suffer from random relative alignment, weak interfacial interaction, and unavoidable interface contaminants. Here we report the direct growth of high-quality graphene/2D superconductor (nonlayered ultrathin alpha-Mo2C crystal) vertical heterostructures with uniformly well-aligned lattice orientation and strong interface coupling by chemical vapor deposition. In the heterostructure, both graphene and 2D alpha-Mo2C crystal show no defect, and the graphene is strongly compressed. Different from the previously reported graphene/superconductor heterostructures or hybrids, the strong interface coupling leads to a phase diagram of superconducting transition with multiple voltage steps being observed in the transition regime. Furthermore, we demonstrate the realization of highly transparent Josephson junction devices based on these strongly coupled high-quality heterostructures, in which a clear magnetic-field-induced Fraunhofer pattern of the critical supercurrent is observed.
部门归属[xu, chuan ; liu, zhibo ; chen, long ; ma, xiuliang ; cheng, hui-ming ; ren, wencai] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china ; [song, shuang ; wang, libin ; fan, dingxun ; kang, ning] peking univ, beijing key lab quantum devices, key lab phys & chem nanodevices, beijing 100871, peoples r china ; [song, shuang ; wang, libin ; fan, dingxun ; kang, ning] peking univ, dept elect, beijing 100871, peoples r china ; [cheng, hui-ming] tsinghua univ, tbsi, shenzhen 518055, peoples r china ; [cheng, hui-ming] king abdulaziz univ, chem dept, fac sci, jeddah 21589, saudi arabia
关键词Graphene 2d Transition Metal Carbides Heterostructure High Quality Superconductivity
学科领域Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
资助者Ministry of Science and Technology of China [2016YFA0200101, 2016YFA0300601]; National Science Foundation of China [51325205, 51290273, 51521091, 11374019]; 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/321006/78100
专题中国科学院金属研究所
通讯作者Ren, WC (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China.; Kang, N (reprint author), Peking Univ, Beijing Key Lab Quantum Devices, Key Lab Phys & Chem Nanodevices, Beijing 100871, Peoples R China.; Kang, N (reprint author), Peking Univ, Dept Elect, Beijing 100871, Peoples R China.
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GB/T 7714
Xu, Chuan,Song, Shuang,Liu, Zhibo,et al. Strongly Coupled High-Quality Graphene/2D Superconducting Mo2C Vertical Heterostructures with Aligned Orientation[J]. ACS NANO,2017,11(6):5906-5914.
APA Xu, Chuan.,Song, Shuang.,Liu, Zhibo.,Chen, Long.,Wang, Libin.,...&Kang, N .(2017).Strongly Coupled High-Quality Graphene/2D Superconducting Mo2C Vertical Heterostructures with Aligned Orientation.ACS NANO,11(6),5906-5914.
MLA Xu, Chuan,et al."Strongly Coupled High-Quality Graphene/2D Superconducting Mo2C Vertical Heterostructures with Aligned Orientation".ACS NANO 11.6(2017):5906-5914.
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