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- W2017628497 abstract "We have studied temperature dependent local structure of superconducting La 2- x Sr x CuO 4 (0.105, 0.13, 0.20) single crystals by Cu K-edge extended x-ray absorption fine structure (EXAFS) measurements with polarization parallel to the in-plane Cu–O bonds. We find that, while underdoped crystals ( x =0.105, 0.13) show anomalous temperature dependence, similar to the case of optimally doped system ( x =0.15), overdoped crystal ( x =0.20) does not reveal such anomaly. Correlated Debye–Waller factor (DWF) of the Cu–O bonds (distance broadening) has been used as an order parameter to determine characteristic local displacements in the CuO 2 plane. The amplitude of temperature dependent step-like increase in the DWF at low temperature decreases with increasing doping. It has been discussed that decreasing electron–lattice interaction with increasing doping, shown by angle resolved photoemission measurements, is closely related to the evolving anomalous local CuO 2 distortion and charge inhomogeneity with doping in the CuO 2 plane of high T c oxides." @default.
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- W2017628497 date "2003-04-15" @default.
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- W2017628497 title "Study of Temperature Dependent Local Structure by Polarized Cu K-edge EXAFS Measurements on La2-xSrxCuO4(x=0.105, 0.13, 0.20)" @default.
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- W2017628497 doi "https://doi.org/10.1143/jpsj.72.829" @default.
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