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Influence of collective effects and the d-CDW on electronic Raman scattering in high-T$_c$ superconductors

R. Zeyher·A. Greco
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Abstract

Electronic Raman scattering in high-T$_c$ superconductors is studied within the t-J model. It is shown that the A$_{1g}$ and B$_{1g}$ spectra are dominated by amplitude fluctuations of the superconducting and the d-wave CDW order parameters, respectively. The B$_{2g}$ spectrum contains no collective effects and its broad peak reflects vaguely the doping dependence of T$_c$, similarly to the pronounced peak in the A$_{1g}$ spectrum. The agreement of our theory with the experiment supports the picture of two different, competing order parameters in the underdoped regime of high-T$_c$ superconductors.

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R. Zeyher, A. Greco. 2002-10-04. Influence of collective effects and the d-CDW on electronic Raman scattering in high-T$_c$ superconductors. https://doi.org/10.1103/physrevlett.89.177004

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