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首页> 外文期刊>Physical review >Magnetic inhomogeneity in charge-ordered La_(1.885)Sr_(0.115)CuO_4 studied by NMR
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Magnetic inhomogeneity in charge-ordered La_(1.885)Sr_(0.115)CuO_4 studied by NMR

机译：磁性不均匀性，在充电的LA_（1.885）SR_（0.115）CUO_4由NMR研究

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摘要

We report the inverse Laplace transform analysis of the ~(139)La nuclear spin-lattice relaxation rate 1/T_1 (ILTT_1 analysis) in charge-ordered La_(1.885)Sr_(0.115)CuO_4 (T_(charge)≃80 K, T_c≃ T_(spin)~(neutron) = 30 K). and shed light on its magnetic inhomogeneity. We deduce the probability density function P(1/T_1) of the distributed 1/T_1 (i.e.. the histogram of distributed 1/T_1) by taking the inverse Laplace transform of the experimentally observed nuclear magnetization recovery curve M(t). We demonstrate that spin freezing sets in in some domains precisely below the onset of charge order at T_(charge), but their volume fraction grows only gradually toward T_c Nearly a half of the sample volume exhibits properties expected for canonical high-T_c cuprates without charge order even near T_c. Our findings explain why charge order does not suppress T_c of La_(1.885)Sr_(0.115)CuO_4 as significantly as in La_(1.875)Ba_(0.125)CuO_4.
机译：我们报告了〜（139）LA核旋转晶格松弛率1 / T_1（ILTT_1分析）的逆拉普拉斯变换分析（1.885）SR_（0.115）CUO_4（T_（CHARGE）≃80k，T_C ≃T_（旋转）〜（中子）= 30 k）。并阐明了它的磁性不均匀性。我们通过采用实验观察到的核磁化回收曲线M（t）的逆拉普拉斯变换来推导分布式1 / T_1（即分布式1 / T_1的直方图）的概率密度函数p（1 / t_1）。我们证明，在T_（电荷）上精确地静音在一些域中，但它们的体积分数仅逐渐向T_C逐渐增长，几乎一半的样品体积表现出在无电荷的规范高T_C铜蛋白的特性甚至在T_C附近订购。我们的调查结果解释了为什么收费订单不抑制LA_（1.885）SR_（0.115）CUO_4的T_C，如LA_（1.875）BA_（0.125）CUO_4。

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  • 来源
    《Physical review》 |2020年第18期|184505.1-184505.8|共8页
  • 作者

    A. Arsenault; T. Imai; P. M. Singer; K. M. Suzuki; M. Fujita;

  • 作者单位

    Department of Physics and Astronomy McMaster University Hamilton Ontario Canada L8S4M1;

    Department of Physics and Astronomy McMaster University Hamilton Ontario Canada L8S4M1;

    Department of Chemical and Biomolecular Engineering Rice University 6100 Main Street Houston Texas 77005-1892 USA;

    Institute for Materials Research Tohoku University Sendai 980-8577 Japan;

    Institute for Materials Research Tohoku University Sendai 980-8577 Japan;

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