Effect of Zn and Ni impurities on the quasiparticle renormalization in Bi-2212

Details Effect of Zn and Ni impurities on the quasiparticle renormalization in Bi-2212 Effect of Zn and Ni impurities on the quasiparticle renormalization in Bi-2212

2005-08-23

arxiv.org/abs/cond-mat/0508542v1

Phys. Rev. Lett. 96, 037003 (2006)

Physics

Condensed Matter

Superconductivity

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.96.037003

The Cu substitution by Zn and Ni impurities and its influence on the mass renormalization effects in angle resolved photoelectron spectra (ARPES) of Bi-2212 is addressed. We show that the nonmagnetic Zn atoms have much stronger effect both in nodal and antinodal parts of the Brillouin zone than magnetic Ni. The observed changes are consistent with the behaviour of the spin resonance mode as seen by inelastic neutron scattering in YBCO. This strongly suggests that the "peak-dip-hump" and the "kink" in ARPES on the one side and neutron resonance on the other are closely related features.

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