Physics – Condensed Matter – Superconductivity
Scientific paper
2000-12-11
Phys. Rev. B 63, 172503, (2001
Physics
Condensed Matter
Superconductivity
6 pages, 5 figures
Scientific paper
10.1103/PhysRevB.63.172503
We investigate the effects of spin fluctuations on the tunneling spectra of the NS junction. In the high junction resistance limit, the dip/hump structure observed in ARPES data for the high Tc superconductors is reproduced in a RPA treatment of the t-t'-J model. It is shown that the dip/hump structure weakens as doping increases as reflected in the data. In the other limit, we predict that the zero bias Andreev peak can coexist with the dip/hump structure. Furthermore, the c-axis tunneling spectra is found to be very similar to a recent STM data once these fluctuations are included.
Chang Darwin
Mou Chung-Yu
Wu Ching-Long
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