Resonant Raman scattering in mercurate single crystals

Y. Gallais; A. Sacuto; D. Colson

doi:10.1016/j.physc.2004.03.131

Resonant Raman scattering in mercurate single crystals

Superconductivity 2009-11-10 v1 Strongly Correlated Electrons

Authors: Y. Gallais , A. Sacuto , D. Colson

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Abstract

We report resonant electronic Raman scattering in optimally doped single layer HgBa $_2$ CuO $_{4+\delta}$ (Hg-1201) and trilayer HgBa $_2$ Ca $_2$ Cu $_3$ O $_{8+\delta}$ (Hg-1223) single crystals. Analysis of the $B_{1g}$ and B $_{2g}$ channels in the superconducting state of Hg-1201 advocates for a gap having d-wave symmetry. In addition a resonant study $B_{1g}$ pair-breaking peak and the $A_{1g}$ peak suggests that the $A_{1g}$ peak is not directly related to the d-wave superconducting gap amplitude. Comparison with trilayer Hg-1223 demonstrates the universal behavior of this two energy scales in optimally doped cuprates.

Keywords

resonant Raman scattering Hg-1201 Hg-1223 d-wave symmetry B_{1g} channel B_{2g} channel cuprates

Cite

@article{arxiv.cond-mat/0311579,
  title  = {Resonant Raman scattering in mercurate single crystals},
  author = {Y. Gallais and A. Sacuto and D. Colson},
  journal= {arXiv preprint arXiv:cond-mat/0311579},
  year   = {2009}
}

Comments

4 pages, 4 figures, M2S-Rio (invited paper). to appear in Physica C

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