On properly integrating the electronic Raman and optical infra-red spectra of HTSC cuprate materials

Details On properly integrating the electronic Raman and optical infra-red spectra of HTSC cuprate materials On properly integrating the electronic Raman and optical infra-red spectra of HTSC cuprate materials

2009-05-29

arxiv.org/abs/0905.4890v1

Physics

Condensed Matter

Superconductivity

23 pages, 4 figures

Scientific paper

New electronic Raman and I.R. spectroscopy results from optimally and overdoped high temperature superconducting (HTSC) cuprate systems are interpreted in terms of the negative-U, boson-fermion crossover model. Distinction is made between those features which follow the condensate gap, 2Delta(p), and those that are set by the local-pair binding energy, cursive U(p). The critical role of doping level psubc = 0.185 is highlighted in conjunction with the matter of developing quasiparticle incoherence, making connection here with recent transport and related results. E//c IR results in magnetic fields parallel and perpendicular to c prove particularly illuminating. The general scheme developed continues to embrace all experimental data very satisfactorily.

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