Renormalization of spectral lineshape and dispersion below Tc in Bi2Sr2CaCu2O8+d

Details Renormalization of spectral lineshape and dispersion below Tc in Bi2Sr2CaCu2O8+d Renormalization of spectral lineshape and dispersion below Tc in Bi2Sr2CaCu2O8+d

2000-04-27

arxiv.org/abs/cond-mat/0004482v2

Phys. Rev. Lett. 86, 1070 (2001)

Physics

Condensed Matter

Superconductivity

New Figure 3 with expanded discussion

Scientific paper

10.1103/PhysRevLett.86.1070

Angle-resolved photoemission (ARPES) data in the superconducting state of Bi2Sr2CaCu2O8+d show a kink in the dispersion along the zone diagonal, which is related via a Kramers-Kronig analysis to a drop in the low-energy scattering rate. As one moves towards (pi,0), this kink evolves into a spectral dip. The occurrence of these anomalies in the dispersion and lineshape throughout the zone indicate the presence of a new energy scale in the superconducting state.

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