caa a22 4500 445382821 CHVBK 20180317143022.0 cr unu---uuuuu 170323e20110701xx s 000 0 eng 10.1007/s10948-010-1117-x doi (NATIONALLICENCE)springer-10.1007/s10948-010-1117-x Study of Microstructure and Local Electron Structure ofZn-Doping GdBa2Cu3O7− δ Systems Using Positron Experiment [Elektronische Daten] [Zhenping Chen, Juan Guo, Renzhong Xue, Tao Li, Lei Su, Chunmei Wang, Haiyang Dai, Yuncai Xue] The Zn-doped GdBa2Cu3−x Zn x O7−δ (x=0.00-0.40) superconductors have been systemically investigated by structural analysis and positron lifetime. The structural results show that the lattice parametera andb increase slightly with increasing Zn contentx, and the parameterc has a small abrupt decrease. Based on the Jahn-Teller model, we analyze the results of structural distortion. From the positron lifetime data, the local electron densityn e has been calculated and the result implies a redistribution of electrons between the Cu-O chains and the CuO2 planes, resulting in the carrier localization. Furthermore, combining the results of the electronic densityn e and the transition temperatureT c with Zn doping content, it suggests that the carrier localization could interfere the pairing and the "charge transfer” between Cu-O chains and the CuO2 planes and then suppresses superconductivity of the systems. Springer Science+Business Media, LLC, 2010 Cuprate superconductor nationallicence Zn doping nationallicence Microstructure nationallicence Local electron density nationallicence Chen Zhenping Department of Technology and Physics, Zhengzhou University of Light Industry, 450002, Zhengzhou, China aut Guo Juan School of Physics and Engineering, Zhengzhou University, 450052, Zhengzhou, China aut Xue Renzhong Department of Technology and Physics, Zhengzhou University of Light Industry, 450002, Zhengzhou, China aut Li Tao Department of Technology and Physics, Zhengzhou University of Light Industry, 450002, Zhengzhou, China aut Su Lei Department of Technology and Physics, Zhengzhou University of Light Industry, 450002, Zhengzhou, China aut Wang Chunmei Department of Technology and Physics, Zhengzhou University of Light Industry, 450002, Zhengzhou, China aut Dai Haiyang Department of Technology and Physics, Zhengzhou University of Light Industry, 450002, Zhengzhou, China aut Xue Yuncai Department of Technology and Physics, Zhengzhou University of Light Industry, 450002, Zhengzhou, China aut Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/5(2011-07-01), 1739-1743 1557-1939 24:5<1739 2011 24 10948 https://doi.org/10.1007/s10948-010-1117-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10948-010-1117-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chen Zhenping Department of Technology and Physics, Zhengzhou University of Light Industry, 450002, Zhengzhou, China aut NATIONALLICENCE 700 1- Guo Juan School of Physics and Engineering, Zhengzhou University, 450052, Zhengzhou, China aut NATIONALLICENCE 700 1- Xue Renzhong Department of Technology and Physics, Zhengzhou University of Light Industry, 450002, Zhengzhou, China aut NATIONALLICENCE 700 1- Li Tao Department of Technology and Physics, Zhengzhou University of Light Industry, 450002, Zhengzhou, China aut NATIONALLICENCE 700 1- Su Lei Department of Technology and Physics, Zhengzhou University of Light Industry, 450002, Zhengzhou, China aut NATIONALLICENCE 700 1- Wang Chunmei Department of Technology and Physics, Zhengzhou University of Light Industry, 450002, Zhengzhou, China aut NATIONALLICENCE 700 1- Dai Haiyang Department of Technology and Physics, Zhengzhou University of Light Industry, 450002, Zhengzhou, China aut NATIONALLICENCE 700 1- Xue Yuncai Department of Technology and Physics, Zhengzhou University of Light Industry, 450002, Zhengzhou, China aut NATIONALLICENCE 773 0- Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/5(2011-07-01), 1739-1743 1557-1939 24:5<1739 2011 24 10948 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer