Effect of spin excitations on the property of quasiparticles in electron-doped cuprates

Details Effect of spin excitations on the property of quasiparticles in electron-doped cuprates Effect of spin excitations on the property of quasiparticles in electron-doped cuprates

2009-01-05

arxiv.org/abs/0901.0423v1

Phys. Rev. B 79, 132503 (2009)

Physics

Condensed Matter

Superconductivity

Scientific paper

10.1103/PhysRevB.79.132503

It is proposed that the 50-70 meV dispersion anomaly (kink) in electron-doped cuprates revealed by recent angle-resolved photoemission spectroscopy experiments is caused by coupling with the spin fluctuation. We elaborate that the kink exists both along nodal and antinodal directions, and both in the superconducting and normal state. The renormalized effect for the density of states is also studied and the hump feature outside the superconducting coherent peak is established, consistent with recent scanning tunnelling microscopy experiments.

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