Superconducting gap of overdoped Tl2Ba2CuO6+d observed by Raman scattering

K. Nishikawa; T. Masui; S. Tajima; H. Eisaki; H. Kito; A. Iyo

doi:10.1016/j.jpcs.2008.06.022

Superconducting gap of overdoped Tl2Ba2CuO6+d observed by Raman scattering

Superconductivity 2009-11-13 v1 Strongly Correlated Electrons

Authors: K. Nishikawa , T. Masui , S. Tajima , H. Eisaki , H. Kito , A. Iyo

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Abstract

We report Raman scattering spectra for single crystals of overdoped Tl2Ba2CuO6+d (Tl-2201) at low temperatures. It was observed that the pair-breaking peaks in A1g and B1g spectra radically shift to lower energy with carrier doping. We interpret it as s-wave component mixing into d-wave, although the crystal structure is tetragonal. Since similar phenomena were observed also in YBa2Cu3Oy and Bi2Sr2CaCu2Oz, we conclude that s-wave mixing is a common property for overdoped high-Tc superconductors.

Keywords

superconducting gap overdoped Tl2Ba2CuO6+d Raman scattering pair-breaking peaks s-wave mixing d-wave high-Tc superconductors

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@article{arxiv.0712.3381,
  title  = {Superconducting gap of overdoped Tl2Ba2CuO6+d observed by Raman scattering},
  author = {K. Nishikawa and T. Masui and S. Tajima and H. Eisaki and H. Kito and A. Iyo},
  journal= {arXiv preprint arXiv:0712.3381},
  year   = {2009}
}

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8 pages, 3 figures, proceedings of SNS2007

Superconducting gap of overdoped Tl2Ba2CuO6+d observed by Raman scattering

Abstract

Keywords

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