| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Growth, Characterization and Fermi Surface of Heavy Fermion CeCoIn5 Superconductor |
| JIA Xiao-Wen1, LIU Yan1, YU Li1, HE Jun-Feng1, ZHAO Lin1, ZHANG Wen-Tao1, LIU Hai-Yun1, LIU Guo-Dong1, HE Shao-Long1, ZHANG Jun1, LU Wei1, WU Yue1, DONG Xiao-Li1, SUN Li-Ling1, WANG Gui-Ling2, ZHU Yong2, WANG Xiao-Yang2, PENG Qin-Jun2, WANG Zhi-Min2, ZHANG Shen-Jin2, YANG Feng2, XU Zu-Yan2, CHEN Chuang-Tian2, ZHOU Xing-Jiang1**
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1National Lab for Superconductivity, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190
2Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190
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| Cite this article: |
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JIA Xiao-Wen, LIU Yan, YU Li et al 2011 Chin. Phys. Lett. 28 057401 |
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Abstract High quality single crystals of heavy Fermion CeCoIn5 superconductor have been grown by flux method with a typical size of (1−2)×(1−2)×(∼0.1) mm3. The single crystals are characterized by structural analysis from x−ray diffraction and Laue diffraction, as well as compositional analysis. Magnetic and electrical measurements on the single crystals show a sharp superconducting transition with a transition temperature at Tc,onset∼2.3 K and a transition width of ∼0.15 K. The resistivity of the CeCoIn5 crystal exhibits a hump at ∼45 K, which is typical of a heavy Fermion system. High resolution angle−resolved photoemission spectroscopy (ARPES) measurements of CeCoIn5 reveal clear Fermi surface sheets that are consistent with the band structure calculations when assuming itinerant Ce 4f electrons at low temperature. This work provides important information on the electronic structure of heavy Fermion CeCoIn5 superconductor. It also lays a foundation for further studies on the physical properties and superconducting mechanism of the heavy Fermion superconductors.
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| Keywords:
74.70.-b
74.25.Jb
79.60.-i
71.20.-b
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Received: 20 January 2011
Published: 26 April 2011
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| PACS: |
74.70.-b
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(Superconducting materials other than cuprates)
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74.25.Jb
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(Electronic structure (photoemission, etc.))
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79.60.-i
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(Photoemission and photoelectron spectra)
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71.20.-b
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(Electron density of states and band structure of crystalline solids)
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