1999/07/31 by Emil S. Božin, E. S. Bozin, G. H. Kwei +3 · 3 citations
Chemistry · Earth and Planetary Sciences · Physics and Astronomy · #Advanced Condensed Matter Physics #Charge (physics) #Chemistry #Condensed matter physics #Crystallography #Diffraction #Doping #High-pressure geophysics and materials #Materials science #Neutron diffraction #Optics #Orthorhombic crystal system #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.84.5856
4 pages, 3 figures, submitted to Physical Review Letters (27-th of June 1999) resubmitted to Phys. Rev. Lett. (8th of March 2000)
arxiv created 2000/03/09 · openalex publication_date 2000/06/19 · arxiv updated 2016/08/31 · openalex created_date 2020/05/13 · openalex updated_date 2026/08/05
High-resolution atomic pair distribution functions have been obtained using neutron powder diffraction data from La2-xSrxCuO4 over the range of doping 0<or=x<or=0.30 at 10 K. Despite the average structure getting less orthorhombic, we see a broadening of the in-plane Cu-O bond distribution as a function of doping up to optimal doping. Thereafter the peak abruptly sharpens. The peak broadening can be well explained by a local microscopic coexistence of doped and undoped material. This suggests a crossover from a charge inhomogeneous state at and below optimal doping to a homogeneous charge state above optimal doping.