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- W2014035145 abstract "The high-pressure synthesis, structural characterization, and physical properties of La1−xSrxCuO2.5(0 ≤x≤ 0.20) are reported. The nondoped LaCuO2.5prepared at high pressure of 6 GPa crystallizes in the CaMnO2.5structure which is one of the prototypes of anion-deficient perovskites. The Rietveld analysis of the powder X-ray diffraction pattern remarkably shows a quasi-one-dimensional structure composed of Cu–O ladders. The magnetic susceptibility measurements suggest a spin liquid ground state with a large energy gap of 490 K as theoretically expected for aS= 1/2 Heisenberg antiferromagnetic ladder system. Systematic hole-doping is achieved by substituting Sr for La. A dramatic insulator-to-metal transition has been observed in the resistivity measurements on doping, but, with no signs of superconductivity as predicted theoretically for a lightly doped spin-ladder system." @default.
- W2014035145 created "2016-06-24" @default.
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- W2014035145 date "1996-05-01" @default.
- W2014035145 modified "2023-10-17" @default.
- W2014035145 title "La1−Sr CuO2.5as a Doped Spin-Ladder Compound" @default.
- W2014035145 doi "https://doi.org/10.1006/jssc.1996.0172" @default.
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