Wilson JA. On properly integrating the electronic Raman and optical infra-red spectra of high temperature superconducting cuprate materials.
JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2009;
21:495703. [PMID:
21836203 DOI:
10.1088/0953-8984/21/49/495703]
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Abstract
New electronic Raman and infra-red spectroscopy results from optimally and overdoped high temperature superconducting cuprate systems are interpreted in terms of the negative- U, boson-fermion crossover model. A distinction is made between those features which follow the condensate gap, 2Δ(p), and those that are set by the local pair binding energy, [Formula: see text]. The critical role of the doping level p(c) = 0.185 is highlighted in conjunction with the question of developing quasiparticle incoherence, making connection here with recent transport and related results. [Formula: see text] IR results for 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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