Relation between the superconducting gap energy and the two-magnon Raman peak energy in Bi2Sr2Ca{1-x}YxCu2O{8+δ}

Abstract

The relation between the electronic excitation and the magnetic excitation for the superconductivity in Bi2Sr2Ca{1-x}YxCu2O{8+δ} was investigated by wide-energy Raman spectroscopy. In the underdoping region the B1g scattering intensity is depleted below the two-magnon peak energy due to the "hot spots" effects. The depleted region decreases according to the decrease of the two-magnon peak energy, as the carrier concentration ncreases. This two-magnon peak energy also determines the B1g superconducting gap energy as $2\Delta \approx \alpha \hslash {\omega }_{\mathrm{Two}-\mathrm{Magnon}}\approx J_{\mathrm{effective}}$ $(\alpha =0.34-0.41)$ from under to overdoping hole concentration.

10 pages, 4 figures

References in corpus (2)

• The Magnetic Excitation Spectrum and Thermodynamics of High-$T_c$ Superconductors
• Carrier relaxation, pseudogap, and superconducting gap in high-Tc cuprates: A Raman scattering study

Cited by in corpus (33)

• How to detect fluctuating order in the high-temperature superconductors
• Inelastic Light Scattering From Correlated Electrons
• Higgs mode in the d-wave superconductor Bi2Sr2CaCu2O8+x driven by an intense terahertz pulse
• Asymmetry of the electronic states in hole- and electron-doped cuprates: Exact diagonalization study of the t-t'-t''-J model
• Unified electronic phase diagram for hole-doped high-Tc cuprates
• Raman scattering through a metal-insulator transition
• Paramagnons and high-temperature superconductivity in mercury-based cuprates
• Dynamics of broken symmetry nodal and anti-nodal excitations in Bi_{2} Sr_{2} CaCu_{2} O_{8+δ} probed by polarized femtosecond spectroscopy
• Raman Scattering versus Infrared Conductivity: Evidence for one-dimensional Conduction in La_{2-x}Sr_{x}CuO_{4}
• Magnetic nature of the 500 meV peak in $\mathrm{L}{\mathrm{a}}_{2-\mathrm{x}}\mathrm{S}{\mathrm{r}}_{\mathrm{x}}\mathrm{Cu}{\mathrm{O}}_4$ observed with resonant inelastic x-ray scattering at the Cu $K$-edge
• Electron interactions and charge ordering in La${}_{2-x}$Sr${}_x$CuO${}_4$
• Raman study of carrier-overdoping effects on the gap in high-Tc superconducting cuprates
• Doping dependence of the electronic Raman spectra in cuprates
• Saddle-point van Hove singularity and the phase diagram of high-Tc cuprates
• Dielectric versus magnetic pairing mechanisms in high-temperature cuprate superconductors investigated using Raman scattering
• Nonresonant B1g Raman scattering in the Hubbard model
• Relationship among superconductivity, pseudogap, and high-energy magnetic fluctuations in a model high-Tc superconductor from electronic Raman scattering
• Doping dependence of the superconducting gap in Bi2Sr2CaCu2O{8 + delta}
• Resonance mode in $B_{1g}$ Raman scattering -- a way to distinguish between spin-fluctuation and phonon-mediated $d-$wave superconductivity
• Electronic Raman scattering in a multiband model for cuprate superconductors
• Large magnetic field-induced spectral weight enhancement of high-energy spin excitations in $L{a}_{1.88}S{r}_{0.12}Cu{O}_4$
• Superconducting and Pseudogap effects on the interplane conductivity and Raman scattering cross section in the two dimensional Hubbard Model
• Nonresonant inelastic light scattering in the Hubbard model
• Quantitative comparison of single- and two-particle properties in the cuprates
• Optical symmetries and anisotropic transport in high-Tc superconductors
• Three energy scales in the superconducting state of hole-doped cuprates detected by electronic Raman scattering
• Superconducting pairing and the pseudogap in nematic striped La2-xSrxCuO4
• Fluctuations and pairing in Fe-based superconductors: Light scattering experiments
• In-plane optical features of the underdoped La_2CuO_4 based compounds: theoretical multiband analysis
• Energy Scales in the Raman spectrum of electrons and hole doped cuprates within competing scenarios
• Universal phonon softening in the pseudogap state of Tl${}_2$Ba${}_2$Ca${}_{n-1}$Cu${}_n$O${}_{2n+4+\delta }$
• Tc is insensitive to magnetic interactions in high-Tc superconductors
• Spin singlet and quasiparticles excitations in cuprate superconductors