C-axis electronic Raman scattering in Bi_2Sr_2CaCu_2O_{8+δ}

Abstract

We report a c-axis-polarized electronic Raman scattering study of Bi_2Sr_2CaCu_2O_{8+δ} single crystals. In the normal state, a resonant electronic continuum extends to 1.5 eV and gains significant intensity as the incoming photon energy increases. In the superconducting state, a coherence 2Δpeak appears around 50 meV, with a suppression of the scattering intensity at frequencies below the peak position. The peak energy, which is higher than that seen with in-plane polarizations, signifies distinctly different dynamics of quasiparticle excitations created with out-of-plane polarization.

12 pages, REVTEX, 3 postscript figures

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• Destruction of the Fermi Surface in Underdoped High Tc Superconductors
• Evolution of Magnetic and Superconducting Fluctuations with Doping of High-Tc Superconductors
• c-axis electrodynamics of ybco
• c-axis penetration depth of Hg-1201 single crystals
• Raman Scattering in Cuprate Superconductors

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• Relation between the superconducting gap energy and the two-magnon Raman peak energy in Bi2Sr2Ca{1-x}YxCu2O{8+δ}
• Interlayer Conductivity in the Superconductor Tl-Ba-Cu-O: Energetics and Energy Scales
• Superconductivity-induced Resonance Raman Scattering in Multi-layer High-Tc Superconductors
• Superconducting pairing and the pseudogap in nematic striped La2-xSrxCuO4
• The Symmetries of the Order Parameters for Pairing and Phase Coherence in Hole-Doped Cuprates
• Optical Constants of Crystalline Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ by Brillouin Light Scattering Spectroscopy