Robust intrinsic electronic superconducting phases in underdoped La_{2-x}Sr_xCuO4 single crystals

X. L. Dong; P. H. Hor; F. Zhou; Z. -X. Zhao

doi:10.1016/j.ssc.2007.10.034

Robust intrinsic electronic superconducting phases in underdoped La_{2-x}Sr_xCuO4 single crystals

Superconductivity 2015-06-25 v1

Authors: X. L. Dong , P. H. Hor , F. Zhou , Z. -X. Zhao

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Abstract

We have measured the superconducting critical temperature (Tc) and the diamagnetic susceptibility of La2-xSrxCuO4 single crystals in various magnetic fields. We observed a field-induced evolution from an apparent Tc phase to an intrinsic Tc1 = 15 K or Tc2 = 30 K phase characterized by "magic" hole concentration which is commensurate with that of a two dimensional electronic lattice. The onset Tc of the intrinsic superconducting phases remains robust up to H = 5 Tesla. We suggest that the intrinsic superconducting phases at "magic" doping concentrations are the pristine electronic phases of high temperature superconductivity.

Keywords

high-temperature superconductor La2-xSrxCuO4 intrinsic superconducting phase magic doping critical temperature diamagnetic susceptibility

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@article{arxiv.cond-mat/0610864,
  title  = {Robust intrinsic electronic superconducting phases in underdoped La_{2-x}Sr_xCuO4 single crystals},
  author = {X. L. Dong and P. H. Hor and F. Zhou and Z. -X. Zhao},
  journal= {arXiv preprint arXiv:cond-mat/0610864},
  year   = {2015}
}

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17 pages, 4 figures, submitted to Phys. Rev. Lett

Robust intrinsic electronic superconducting phases in underdoped La_{2-x}Sr_xCuO4 single crystals

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