Analysis of the local structure by single-crystal neutron scattering in La1.85Sr0.15CuO4
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概要
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We have determined the anisotropic Debye-Waller parameters of La1.85Sr0.15CuO4 with high precision using neutron diffraction on single crystals. The mean-square displacements are explained well by the contribution due to phonons and disorder induced by the mixing of La and Sr ions; the latter was simulated by relaxing the structure locally. Our analysis puts rather low upper boundaries on the amplitude of possible hidden local structural distortions; in particular, there is no evidence for in-plane charge inhomogeneities related to stripe correlations. Further, we conclude that the tilt transition in La1.85Sr0.15CuO4 is essentially displacive and continuous in nature.
- American Physical Societyの論文
- 2001-03-23
著者
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藤田 敏三
Department Of Quantum Matter Adsm Hiroshima University
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藤田 敏三
広大先端
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Nakamura F
Department Of Quantum Matter Adsm Hiroshima University
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