Local structural evidence for inhomogeneous charge distribution in CuO2 planes of superconducting La2−xSrxCuO4

Local structural evidence is found supporting the presence of charge inhomogeneities in the CuO2 planes of underdoped La2-xSrxCuO4 using high-resolution PDF analysis of neutron powder diffraction data. Broadening of the in-plane CuO bond distribution as a function of doping up to optimal doping is o...

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Published inPhysica. C, Superconductivity Vol. 341-348; pp. 1793 - 1794
Main Authors Bozˇin, E.S., Billinge, S.J.L., Kwei, G.H., Takagi, H.
Format Journal Article
LanguageEnglish
Published 2000
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Summary:Local structural evidence is found supporting the presence of charge inhomogeneities in the CuO2 planes of underdoped La2-xSrxCuO4 using high-resolution PDF analysis of neutron powder diffraction data. Broadening of the in-plane CuO bond distribution as a function of doping up to optimal doping is observed. Thereafter, the peak abruptly sharpens. Result suggests a crossover from a charge inhomogeneous state below optimal doping to a homogeneous charge state above optimal doping. 4 refs.
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ISSN:0921-4534
DOI:10.1016/S0921-4534(00)01074-1