Intrinsic Impurity in the High Temperature Superconductor Bi_2Sr_2CaCu_2O$_{8+\delta}$

Bo Chen; Sutirtha Mukhopadhyay; W. P. Halperin; Prasenjit Guptasarma; D. G. Hinks

Intrinsic Impurity in the High Temperature Superconductor Bi_2Sr_2CaCu_2O$_{8+\delta}$

Superconductivity 2007-07-24 v1 Strongly Correlated Electrons

Authors: Bo Chen , Sutirtha Mukhopadhyay , W. P. Halperin , Prasenjit Guptasarma , D. G. Hinks

Abstract

The {}^{17}O NMR spectra of Bi_2Sr_2CaCu_2O $_{8+\delta}$ (Bi-2212) single crystals were measured in the temperature range from 4 K to 200 K and magnetic fields from 3 to 29 T, reported here principally at 8 T. The NMR linewidth of the oxygen in the CuO_{2} plane was found to be magnetically broadened with the temperature dependence of a Curie law where the Curie coefficient decreases with increased doping. This inhomogeneous magnetism is an impurity effect intrinsic to oxygen doping and persists unmodified into the superconducting state.

Keywords

high temperature superconductor Bi-2212 NMR spectra Curie law impurity effect oxygen doping inhomogeneous magnetism

Cite

@article{arxiv.0707.3171,
  title  = {Intrinsic Impurity in the High Temperature Superconductor Bi_2Sr_2CaCu_2O$_{8+\delta}$},
  author = {Bo Chen and Sutirtha Mukhopadhyay and W. P. Halperin and Prasenjit Guptasarma and D. G. Hinks},
  journal= {arXiv preprint arXiv:0707.3171},
  year   = {2007}
}

Comments

10 pages, 5 figures

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