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arxiv: cond-mat/9906448 · v1 · pith:HXU5S53Inew · submitted 1999-06-30 · ❄️ cond-mat.supr-con

Superconducting Gap and Pseudogap in Bi-2212

classification ❄️ cond-mat.supr-con
keywords bi-2212dopingpseudogapspectraappearsbelowconfirmcrystals
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We present results of Raman scattering experiments in differently doped Bi-2212 single crystals. Below Tc the spectra show pair-breaking features in the whole doping range. The low frequency power laws confirm the existence of a $d_{x^2-y^2}$-wave order parameter. In the normal state between Tc and T* = 200K we find evidence for a pseudogap in B2g symmetry. Upon doping its effect on the spectra decreases while its energy scale appears to be unchanged.

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