淡江大學機構典藏:Item 987654321/72724
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    题名: Critical fluctuations and quenched disordered two-dimensional charge stripes in La5/3Sr1/3NiO4
    作者: Hatton, P. D.;Ghazi, M. E.;Brown, S.;Cheong, S.-W.
    贡献者: 淡江大學物理學系
    日期: 2000-04
    上传时间: 2013-07-09 15:11:14 (UTC+8)
    出版者: College Park: American Physical Society
    摘要: Using high-resolution x-ray scattering, we have demonstrated the existence of quenched disordered charge stripes in a single crystal of La5/3Sr1/3NiO4 at low temperatures. Above the second-order transition critical scattering was observed due to fluctuations into the charge stripe phase. The charge stripes are shown to be two dimensional in nature both by measurements of their correlation lengths (xi(a) approximate to 185 Angstrom, xi(b) = 400 Angstrom, and xi(c) approximate to 25 Angstrom) and by the critical exponents of the charge strip transition. The charge stripe orderings did not develop long-range order even at low temperatures, indicating that the charge stripes are disordered and that the length scale of the disorder is quenched.
    關聯: Physical Review Letters 84(17), pp.3911-3914
    DOI: 10.1103/PhysRevLett.84.3911
    显示于类别:[物理學系暨研究所] 期刊論文

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