Chin. Phys. Lett.  2000, Vol. 17 Issue (8): 601-602    DOI:
Original Articles |
Superconductivity of Nd1.85Ce0.15CuO4-y by Electrochemical Oxidation
CHEN Ling1;CHE Guang-Can1;LI Hong2;DONG Cheng1;Zhou Fang1;Huang Yu-Zhen1;ZHAO Zhong-Xian1
1 National Laboratory for Superconductivity, Institute of Physics, Chinese Academy of Sciences, Beijing 100080 2National Laboratory for Solid State Ionics, Institute of Physics, Academy of Sciences, Beijing 100080
Cite this article:   
CHEN Ling, CHE Guang-Can, LI Hong et al  2000 Chin. Phys. Lett. 17 601-602
Download: PDF(182KB)  
Export: BibTeX | EndNote | Reference Manager | ProCite | RefWorks
Abstract Superconductivity of n-type superconductor Nd1.85Ce0.15CuO4-y(NCCO) by electrochemical oxidation is reported for the first time and the cyclic voltammogram curve for NCCO as working electrode is presented. Investifations indicate that after oxidation, superconductivity of NCCO is improved: Tc is raised from 20K up to 26K, the superconducting volume fraction is increased also. The valence electronic states of oxygen and copper in NCCO are studied by x-ray photoelectron spectroscopy. It is found that the Cu-2p3/2 peak shifts to the higher binding energy side about 0.4eV, which indicates that the valence-state of copper ions is risen up after oxidation. These results imply that hole-carriers exist in n-type superconductor.
Keywords: 74.62.-c      82.45.+z      79.60.-i     
Published: 01 August 2000
PACS:  74.62.-c (Transition temperature variations, phase diagrams)  
  82.45.+z  
  79.60.-i (Photoemission and photoelectron spectra)  
TRENDMD:   
URL:  
https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2000/V17/I8/0601
Service
E-mail this article
E-mail Alert
RSS
Articles by authors
CHEN Ling
CHE Guang-Can
LI Hong
DONG Cheng
Zhou Fang
Huang Yu-Zhen
ZHAO Zhong-Xian
Related articles from Frontiers Journals
[1] JIA Xiao-Wen, LIU Yan, YU Li, HE Jun-Feng, ZHAO Lin, ZHANG Wen-Tao, LIU Hai-Yun, LIU Guo-Dong, HE Shao-Long, ZHANG Jun, LU Wei, WU Yue, DONG Xiao-Li, SUN Li-Ling, WANG Gui-Ling, ZHU Yong, WANG Xiao-Yang, PENG Qin-Jun, WANG Zhi-Min, ZHANG Shen-Jin, YANG Feng, XU Zu-Yan, CHEN Chuang-Tian, ZHOU Xing-Jiang** . Growth, Characterization and Fermi Surface of Heavy Fermion CeCoIn5 Superconductor[J]. Chin. Phys. Lett., 2011, 28(5): 601-602
[2] ZHAO Lin, ZHANG Wen-Tao, LIU Hai-Yun, MENG Jian-Qiao, LIU Guo-Dong, LU Wei, DONG Xiao-Li, ZHOU Xing-Jiang. High-Quality Large-Sized Single Crystals of Pb-Doped Bi2Sr2CuO6+δ High-Tc Superconductors Grown with Traveling Solvent Floating Zone Method[J]. Chin. Phys. Lett., 2010, 27(8): 601-602
[3] FAN Wei. Anti-Correlation between Energy-Gap and Phonon Energy for Cuprate Bi2212 Superconductor[J]. Chin. Phys. Lett., 2008, 25(6): 601-602
[4] OU Hong-Wei, ZHAO Jia-Feng, ZHANG Yan, SHEN Da-Wei, ZHOU Bo, YANGLe-Xian, HE Cheng, CHEN Fei, XU Min, WU Tao, CHEN Xian-Hui, CHEN Yan, FENG Dong-Lai. Angle Integrated Photoemission Study of SmO0.85F0.15FeAs[J]. Chin. Phys. Lett., 2008, 25(6): 601-602
[5] ZHAO Lin, LIU Hai-Yun, ZHANG Wen-Tao, MENG Jian-Qiao, JIA Xiao-Wen, LIU Guo-Dong, DONG Xiao-Li, CHEN Gen-Fu, LUO Jian-Lin, WANG Nan-Lin, LU Wei, WANG Gui-Ling, ZHOU Yong, ZHU Yong, WANG Xiao-Yang, XU Zu-Yan, CHEN Chuang-Tian, ZHOU Xing-Jiang. Multiple Nodeless Superconducting Gaps in (Ba0.6K0.4)Fe2As2 Superconductor from Angle-Resolved Photoemission Spectroscopy[J]. Chin. Phys. Lett., 2008, 25(12): 601-602
[6] Hatim Mohamed El-Khair Dirar. Strong Band-Edge Emission from ZnS Quantum Dots Stabilized by Gum Arabic[J]. Chin. Phys. Lett., 2008, 25(12): 601-602
[7] SHI Yu, SUN Qing-Qing, DONG Lin, LIU Han, DING Shi-Jin, ZHANG Wei. Improvement of Atomic-Layer-Deposited Al2O3/GaAs Interface Property by Sulfuration and NH3 Thermal Nitridation[J]. Chin. Phys. Lett., 2008, 25(11): 601-602
[8] JIA Xiao-Wen, LIU Hai-Yun, ZHANG Wen-Tao, ZHAO Lin, MENG Jian-Qiao, LIU Guo-Dong, DONG Xiao-Li, WU Gang, LIU Rong-Hua, CHEN Xian-Hui, REN Zhi-An, YI Wei, CHE Guang-Can, CHEN Gen-Fu, WANG Nan-Lin, WANG Gui-Ling, ZHOU Yong, ZHU Yong, WANG Xiao-Yang, ZHAO Zhong-Xian, XU Zu-Yan, CHEN Chuang-Tian, ZHOU Xing-Jiang. Common Features in Electronic Structure of the Oxypnictide Superconductors from Photoemission Spectroscopy[J]. Chin. Phys. Lett., 2008, 25(10): 601-602
[9] Hai-Yun, JIA Xiao-Wen, ZHANG Wen-Tao, ZHAO Lin, MENG Jian-Qiao, LIU Guo-Dong, DONG Xiao-Li, WU Gang, LIU Rong-Hua, CHEN Xian-Hui, REN Zhi-An, YI Wei, CHE Guang-Can, CHEN Gen-Fu, WANG Nan-Lin, WANG Gui-Ling, ZHOU Yong, ZHU Yong, WANG Xiao-Yang, ZHAO Zhong-Xian, XU Zu-Yan, CHEN Chuang-Tian, ZHOU Xing-Jiang. Pseudogap and Superconducting Gap in SmFeAs(O1-xFx) Superconductor from Photoemission Spectroscopy[J]. Chin. Phys. Lett., 2008, 25(10): 601-602
[10] LIU Yan-Fang, LIU Jin-Feng, XU Peng-Shou, PAN Hai-Bin. X-Ray Photoelectron Spectroscopy and Reflection High Energy Electron Diffraction of Epitaxial Growth SiC on Si(100) Using C60 and Si[J]. Chin. Phys. Lett., 2007, 24(7): 601-602
[11] LU Hong-Liang, LI Yan-Bo, XU Min, DING Shi-Jin, SUN Liang, ZHANG Wei, WANG Li-Kang. Characterization of Al2O3 Thin Films on GaAs Substrate Grown by Atomic Layer Deposition[J]. Chin. Phys. Lett., 2006, 23(7): 601-602
[12] ZHAO Song-Rui, SHEN Jing-Qin, XU Zhu-An, Takeya H, Hirata K. Magnetic Pair-Breaking in Y1-xHoxNi2B2C ( x=0, 0.25, 0.5, 0.75) Single Crystals[J]. Chin. Phys. Lett., 2006, 23(4): 601-602
[13] ZHU Xiao-Li, LIU Shi-Bing, CHEN Tao, JIANG Yi-Jian, ZUO Tie-Chuan. Analysis of X-Ray Photoelectron Spectroscopy of Polymethyl Methacrylate Etched by a KrF Excimer Laser[J]. Chin. Phys. Lett., 2005, 22(6): 601-602
[14] PU Lin, CHEN Zhi-Qiang, TAN Chao, YANG Zheng, ZOU Jian-Ping, BAO Xi-Mao, FENG Duan, SHI Yi, ZHENG You-Dou. Microstructural Models of Alumina Nanotubes and Anodic Porous Alumina Film Formed in Sulfuric Acid[J]. Chin. Phys. Lett., 2002, 19(3): 601-602
[15] LIU Sheng-Guang, LI Yong-Gui, WANG Ming-Kai. A Measurement Method of Time Jitter of a Laser Pulse with Respect to the Radio-Frequency Wave Phase in a Photocathode Radio-Frequency Gun[J]. Chin. Phys. Lett., 2002, 19(12): 601-602
Viewed
Full text


Abstract