Superconductivity without dependence on valence electron density in (Al, Zn, Co) doped YBCO systems

Автор(и)

  • Zhang Yufeng Department of Mathematics and Physics, Shanghai University of Electric University 28 Xuehai Road, Nanhui District, Shanghai 201300, PRC
  • Wang Dandan School of Physics and Engineering, Zhengzhou University, Zhengzhou 450052, PRC
  • Li Pinglin School of Physics and Engineering, Zhengzhou University, Zhengzhou 450052, PRC

DOI:

https://doi.org/10.1063/1.3319358

Ключові слова:

YBCO, simulated calculations, positron annihilation, cluster effect, valence electron.

Анотація

We adopted the x-ray diffraction, oxygen contents, positron annihilation technology and simulation methods to investigate systematically YBa2Cu3–x(Al, Zn, Co)xO7–δ (x = 0–0.5) cuprates. The experimental results and simulated calculations support the existence of cluster effect. Moreover, it is concluded that the cluster effect is an important factor on suppression of the superconductivity and the Tc does not depend directly on the density of valence electron in the samples.

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Опубліковано

2010-01-05

Як цитувати

(1)
Yufeng, Z.; Dandan, W.; Pinglin, L. Superconductivity Without Dependence on Valence Electron Density in (Al, Zn, Co) Doped YBCO Systems. Fiz. Nizk. Temp. 2010, 36, 206-211.

Номер

Том 36 № 2 (2010)

Розділ

Надпровідність, зокрема високотемпературна