Intrinsic percolative superconductivity in heavily overdoped high-temperature superconductors

@article{Wen2002IntrinsicPS,
  title={Intrinsic percolative superconductivity in heavily overdoped high-temperature superconductors},
  author={Hai-Hu Wen and S. L. Li and Z. W. Zhao and Z. Y. Liu and H. P. Yang and Dongning Zheng},
  journal={EPL},
  year={2002},
  volume={57},
  pages={260-266}
}
Magnetic measurements on heavily overdoped La 2 − x Sr x CuO 4, Tl2Ba2CuO6, Bi2Sr2CuO6, Y 1 − x (Ca x)Ba2Cu3O7 − δ and Bi2Sr2CaCu2O8 single crystals reveal a new type of magnetization hysteresis loops characterized by the vanishing of the usual central peak near zero field. Since this effect has been observed in various systems with very different structural details, it probably reflects a generic behavior for all high-temperature superconductors. This easy penetration of magnetic flux can be… 
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