Doping dependence of the mass enhancement in (Pb,Bi)_2 Sr_2 Ca Cu_2 O_8 at the antinodal point in the superconducting and normal state

Abstract

Angle-resolved photoemission spectroscopy (ARPES) is used to study the mass renormalization of the charge carriers in the high-T_c superconductor (Pb,Bi)_2Sr_2CaCu_2O_8 in the vicinity of the (pi,0) point in the superconducting and the normal state. Using matrix element effects at different photon energies and due to a high momentum and energy resolution the bonding and the antibonding bands could be separated in the whole dopant range. A huge anisotropic coupling to a bosonic collective mode is observed below T_c for both bands in particular for the underdoped case. Above T_c, the more isotropic coupling to a continuum or a mode at much higher energy is significantly weaker.

4 revtex pages, 4 eps figures

References in corpus (10)

• Angle-resolved photoemission spectroscopy of the cuprate superconductors
• LDA energy bands, low-energy Hamiltonians, t', t'', t_{perp}(k), and J_{perp}
• Singular Fermi Liquids
• The neutron resonance: modeling photoemission and tunneling data in the superconducting state of Bi_2Sr_2CaCu_2O_{8+d}
• Importance of matrix elements in the ARPES spectra of BISCO
• Origin of the peak-dip-hump structure in the photoemission spectra of Bi2212
• What the resonance peak does
• Measuring the gap in ARPES experiments
• Crossover from coherent to incoherent electronic excitations in the normal state of Bi2Sr2CaCu2O8
• Dispersion Anomalies in Bilayer Cuprates and the Odd Symmetry of the Magnetic Resonance

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• Bosons in high temperature superconductors: an experimental survey
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• Identification of a New Form of Electron Coupling in Bi2Sr2CaCu2O8 Superconductor by Laser-Based Angle-Resolved Photoemission
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• Dispersion Anomalies in Cuprate Superconductors
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• Going beyond the linear approximation in describing electron- phonon coupling: relevance for the Holstein model
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• Doping dependence of the many-body effects along the nodal direction in the high-Tc cuprate (Bi,Pb)_2Sr_2CaCu_2O_8
• Infrared scattering rate of overdoped Tl${}_2$Ba${}_2$CuO${}_{6+\delta }$
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• Insights from ARPES for an undoped, four-layered, two-gap high-T_c superconductor
• Doping dependence of phonon and quasiparticle heat transport of pure and Dy-doped Bi_2Sr_2CaCu_2O_{8+δ} single crystals
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