Latest results on the anomalous Raman continuum in YBCO and in certain metals

Three new results are presented regarding the nearly flat electronic Raman continuum found in the cuprate superconductors. (1) Its properties are quite different for untwinnedYBa 2Cu 3O 7 in (bb) and (cc) polarization geometries. In (cc) the cross-section dσ/dω falls off with increasing ω, rather th...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 1991-12, Vol.185, p.72-75
Main Authors: Klein, M.V., Cooper, S.L., Kotz, A.L., Liu, Ran, Reznik, D., Slakey, F., Lee, W.C., Ginsberg, D.M.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Physics
Properties of type I and type II superconductors
Superconductivity
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Summary:Three new results are presented regarding the nearly flat electronic Raman continuum found in the cuprate superconductors. (1) Its properties are quite different for untwinnedYBa 2Cu 3O 7 in (bb) and (cc) polarization geometries. In (cc) the cross-section dσ/dω falls off with increasing ω, rather than gently rising as in (bb), and it shows a rather strong resonance towards 2.8 eV. (2) The continuum in YBa 2Cu 3O x behaves differently with oxygen doping in (bb) relative to (aa), growing in strength with increasing x. [D. Reznik et al., this conference] (3) The T-dependence of the linewidth Γ of the 115 cm −1 “Ba” phonon mode for 10
ISSN:0921-4534
1873-2143
DOI:10.1016/0921-4534(91)91952-Z