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arXiv · 0903.3413

Anisotropic dressing of charge-carriers in the electron-doped cuprate superconductor Sm(1.85)Ce(0.15)CuO(4) from angle-resolved photoemission measurements

A. F. Santander-Syro·T. Kondo·J. Chang·A. Kaminski·S. Pailhes·M. Shi·L. Patthey·A. Zimmers·B. Liang·P. Li·R. L. Greene
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Abstract

Angle-resolved photoemission measurements on the electron-doped cuprate Sm(1.85)Ce(0.15)CuO(4) evidence anisotropic dressing of charge-carriers due to many-body interactions. Most significantly, the scattering rate along the zone boundary saturates for binding energies larger than ~200 meV, while along the diagonal direction it increases nearly linearly with the binding energy in the energy range ~150-500 meV. These results indicate that many-body interactions along the diagonal direction are strong down to the bottom of the band, while along the zone-bounday they become very weak at energies above ~200 meV.

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A. F. Santander-Syro, T. Kondo, J. Chang, A. Kaminski, S. Pailhes, M. Shi, L. Patthey, A. Zimmers, B. Liang, P. Li, R. L. Greene. 2009-03-19. Anisotropic dressing of charge-carriers in the electron-doped cuprate superconductor Sm(1.85)Ce(0.15)CuO(4) from angle-resolved photoemission measurements. https://arxiv.org/abs/0903.3413

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