Resonant Raman scattering in mercurate single crystals

Y. Gallais; A. Sacuto; D. Colson

doi:10.1016/j.physc.2004.03.131

paper

Resonant Raman scattering in mercurate single crystals

arXiv:cond-mat/0311579 · doi:10.1016/j.physc.2004.03.131

Abstract

We report resonant electronic Raman scattering in optimally doped single layer HgBa $_{2}$ CuO $_{4 + δ}$ (Hg-1201) and trilayer HgBa $_{2}$ Ca $_{2}$ Cu $_{3}$ O $_{8 + δ}$ (Hg-1223) single crystals. Analysis of the $B_{1 g}$ and B $_{2 g}$ channels in the superconducting state of Hg-1201 advocates for a gap having d-wave symmetry. In addition a resonant study $B_{1 g}$ pair-breaking peak and the $A_{1 g}$ peak suggests that the $A_{1 g}$ 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.

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

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Nonmonotonic d_{x^2-y^2} Superconducting Order Parameter in Nd_{2-x}Ce_xCuO_4
Theory of Electronic Raman Scattering in Disordered $d -$ wave Superconductors
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Quasiparticles and Energy Scaling in Bi $_{2}$ Sr $_{2}$ Ca $_{n - 1}$ Cu $_{n}$ O $_{2 n + 4}$ ( $n$ =1-3): Angle-Resolved Photoemission Spectroscopy
Evidence for two distinct energy scales in the Raman spectra of YBa2(CuNi)O6.95

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Electronic Raman Scattering in copper oxide Superconductors: Understanding the Phase Diagram
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