Resonant Raman scattering in mercurate single crystals

2003/11/25 by Y. Gallais, Yann Gallais, A. Sacuto +1
Physics and Astronomy · #Advanced Condensed Matter Physics #Physics of Superconductivity and Magnetism #Superconductivity in MgB2 and Alloys #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.1016/j.physc.2004.03.131

published as Physica C 408-410, 785 (2004) · 4 pages, 4 figures, M2S-Rio (invited paper). to appear in Physica C

arxiv created 2003/11/25 · openalex publication_date 2004/04/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We report resonant electronic Raman scattering in optimally doped single layer HgBa₂CuO_4+δ (Hg-1201) and trilayer HgBa₂Ca₂Cu₃O_8+δ (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.

Citations

• Low Energy Excitation and Scaling inBi2Sr2Can−1CunO2n+4(n=1–3): Angle-Resolved Photoemission Spectroscopy
• Electronic Raman scattering inYBa2Cu3O7sand other superconducting cuprates