Intrinsic Percolative Superconductivity in Heavily Overdoped High Temperature Superconductors

Details Intrinsic Percolative Superconductivity in Heavily Overdoped High Temperature Superconductors Intrinsic Percolative Superconductivity in Heavily Overdoped High Temperature Superconductors

2001-04-02

arxiv.org/abs/cond-mat/0104020v1

Europhys. Lett. 57(2), 260-266 (2002)

Physics

Condensed Matter

Superconductivity

4 pages, 5 figures

Scientific paper

10.1209/epl/i2002-00570-7

Magnetic measurements on heavily overdoped $La_{2-x}Sr_xCuO_4$, $Tl_2Ba_2CuO_6$, $Bi_2Sr_2CuO_6$ and $Bi_2Sr_2CaCu_2O_8$ single crystals reveal a new type magnetization hysteresis loops characterized by the vanishing of usual central peak near zero field. Since this effect has been observed in various systems with very different structural details, it reflects probably a generic behavior for all high temperature superconductors. This easy penetration of magnetic flux can be understood in the picture of percolative superconductivity due to the inhomogeneous electronic state in heavily overdoped regime.

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