Raman spectrum and charge fluctuations in the copper-oxide superconductors (CROSBI ID 167043)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Nikšić, Hrvoje ; Tutiš, Eduard ; Barišić, Slaven
engleski
Raman spectrum and charge fluctuations in the copper-oxide superconductors
The effect of the charge fluctuations on the electronic spectrum and the Raman spectrum of high temperature superconductors is examined within the slave boson approach. Instead of using the saddle point approximation for slave bosons, we confine ourselves to the non-crossing approximation (NCA) in summing the diagrams for the Green functions, thus obtaining the renormalized hole spectrum and its lifetime on equal footing. The electronic Raman spectrum is calculated, showing the characteristic featureless behaviour up to the frequency of the order of renormalized Δpd parameter. The dependence on the polarization of the incident and the scattered light agrees with experiments.
high Tc superconductivity ; cuprates ; charge fluctuations ; Raman scattering
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Podaci o izdanju
235-240 (4)
1994.
2179-2180
objavljeno
0921-4534
1873-2143
10.1016/0921-4534(94)92311-6