Effect of the magnetic resonance on the electronic spectra of high-T-c superconductors

Article

关键词: NEUTRON-SCATTERING;    TUNNELING SPECTROSCOPY;    PHOTOEMISSION SPECTRA;    EXCITATION SPECTRUM;    SPIN SUSCEPTIBILITY;    PHONON INTERACTION;    GAP ANISOTROPY;    HUBBARD-MODEL;    LINE-SHAPE;    TEMPERATURE;   

DOI  :  10.1103/PhysRevB.67.144503

来源: SCIE

【 摘 要 】

We explain recent experimental results on the superconducting state spectral function as obtained by angle resolved photoemission, as well as by tunneling, in high-T-c cuprates. In our model, electrons are coupled to the resonant spin-fluctuation mode observed in inelastic neutron-scattering experiments, as well as to a gapped continuum. We show that, although the weight of the resonance is small, its effect on the electron self-energy is large, and can explain various dispersion anomalies seen in the data. In agreement with the experiment, we find that these effects are a strong function of doping. We contrast our results to those expected for electrons coupled to phonons.

【 授权许可】

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