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Tonegawa, Takashi*; Okamoto, Kiyomi*; Hikihara, Toshiya*; Sakai, Toru
Journal of Physics; Conference Series, 683(1), p.012039_1 - 012039_7, 2016/02
Times Cited Count：2 Percentile：69.77(Materials Science, Multidisciplinary)Employing mainly numerical methods, we explore the ground-state phase diagram of an anisotropic S=1/2 ladder, in which leg interactions are uniform and isotropic, while rung interactions are alternating and have a common Ising-type anisotropy. We determine the phase diagrams in some typical cases.
Cu
O
Fukuda, Tatsuo; Mizuki, Junichiro; Matsuda, Masaaki
Physical Review B, 66(1), p.012104_1 - 012104_4, 2002/07
Times Cited Count：16 Percentile：61.13(Materials Science, Multidisciplinary)High-energy synchrotron X-ray diffraction measurements were carried out on a single crystal of SrCuO, and we found that the lattice distortion has not 
but 
times the periodicity of the chain structure along 
(II chain axis) direction at low temperature. These satellite peaks decreased in intensity with increasing temperature. These observations were interpreted properly in terms of a hole ordering model involving the dimerized state of two Cu
ions and a Cu
ion on a Zhang-Rice singlet site in the CuO
chains. These features were clearly observed by using high-energy X-rays (
53.789 keV), while the superlattice peak intensity varied drastically with very little sample surface treatment in the case of low-energy X-ray experiments (15.498 keV).
