Semimetal Na3Bi Thin Film Grown on Double-Layer Graphene by Molecular Beam Epitaxy
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WEN Jing,
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GUO Hua,
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YAN Chen-Hui,
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WANG Zhen-Yu,
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CHANG Kai,
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DENG Peng,
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ZHANG Teng,
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ZHANG Zhi-Dong,
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JI Shuai-Hua,
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WANG Li-Li,
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HE Ke,
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MA Xu-Cun,
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CHEN Xi,
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XUE Qi-Kun
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Abstract
Atomically flat thin films of topological semimetal Na3Bi are grown on double-layer graphene formed on 6H–SiC(0001) substrates by molecular beam epitaxy. By combined techniques of molecular beam epitaxy, scanning tunneling microscopy and angle resolved photoelectron spectroscopy, the growth conditions for Na3Bi thin films on double-layer graphene are successfully established. The band structure of Na3Bi grown on graphene is mapped along Γ–M and Γ– K directions. Furthermore, the energy band of Na3Bi at higher energy is uncovered by doping Cs atoms on the surface.
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WEN Jing, GUO Hua, YAN Chen-Hui, WANG Zhen-Yu, CHANG Kai, DENG Peng, ZHANG Teng, ZHANG Zhi-Dong, JI Shuai-Hua, WANG Li-Li, HE Ke, MA Xu-Cun, CHEN Xi, XUE Qi-Kun. Semimetal Na
3Bi Thin Film Grown on Double-Layer Graphene by Molecular Beam Epitaxy[J].
Chin. Phys. Lett., 2014, 31(11): 116802.
DOI: 10.1088/0256-307X/31/11/116802
WEN Jing, GUO Hua, YAN Chen-Hui, WANG Zhen-Yu, CHANG Kai, DENG Peng, ZHANG Teng, ZHANG Zhi-Dong, JI Shuai-Hua, WANG Li-Li, HE Ke, MA Xu-Cun, CHEN Xi, XUE Qi-Kun. Semimetal Na3Bi Thin Film Grown on Double-Layer Graphene by Molecular Beam Epitaxy[J]. Chin. Phys. Lett., 2014, 31(11): 116802. DOI: 10.1088/0256-307X/31/11/116802
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WEN Jing, GUO Hua, YAN Chen-Hui, WANG Zhen-Yu, CHANG Kai, DENG Peng, ZHANG Teng, ZHANG Zhi-Dong, JI Shuai-Hua, WANG Li-Li, HE Ke, MA Xu-Cun, CHEN Xi, XUE Qi-Kun. Semimetal Na3Bi Thin Film Grown on Double-Layer Graphene by Molecular Beam Epitaxy[J]. Chin. Phys. Lett., 2014, 31(11): 116802. DOI: 10.1088/0256-307X/31/11/116802
WEN Jing, GUO Hua, YAN Chen-Hui, WANG Zhen-Yu, CHANG Kai, DENG Peng, ZHANG Teng, ZHANG Zhi-Dong, JI Shuai-Hua, WANG Li-Li, HE Ke, MA Xu-Cun, CHEN Xi, XUE Qi-Kun. Semimetal Na3Bi Thin Film Grown on Double-Layer Graphene by Molecular Beam Epitaxy[J]. Chin. Phys. Lett., 2014, 31(11): 116802. DOI: 10.1088/0256-307X/31/11/116802
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