Similarity and Difference between Magnetic- and Nonmagnetic-Impurity Effects in Spin-Peierls Cuprate CuGeO_3

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dc.creatorKoide, N.
dc.creatorUchiyama, Y.
dc.creatorHayashi, T.
dc.creatorMasuda, T.
dc.creatorSasago, Y.
dc.creatorUchinokura, K.
dc.creatorManabe, K.
dc.creatorIshimoto, H.
dc.date1998-05-08
dc.date.accessioned2026-07-07T03:10:29Z
dc.date.available2026-07-07T03:10:29Z
dc.descriptionWe have measured the magnetic susceptibility of single-crystal Cu_{1-x}Ni_xGeO_3 to study doping effects of the magnetic impurity (Ni^{2+} has S=1 spin) on the inorganic spin-Peierls (SP) material CuGeO_3. We observed the disappearance of the SP transition and the abrupt increase of the Neel temperature from 2.5 to 3.4 K at x nearly equal to 0.020, which indicates the first-order phase transition between the dimerized-antiferromagnetic (D-AF) and the uniform-antiferromagnetic (U-AF) phases, as was discovered in Mg-doped (Mg^{2+} is nonmagnetic) system [T. Masuda et al., Phys. Rev. Lett. 80, 4566 (1998)]. This indicates that this transition is universal for the doping to Cu site. We also found another phase with the easy axis in the a-c plane in low x region.
dc.description5 pages, 3 Postscript figures, uses revtex. Submitted to Phys. Rev. B, Rapid Communications
dc.identifierhttps://arxiv.org/abs/cond-mat/9805095
dc.identifierhttp://arxiv.org/abs/cond-mat/9805095
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/28257
dc.subjectStrongly Correlated Electrons
dc.subjectMaterials Science
dc.titleSimilarity and Difference between Magnetic- and Nonmagnetic-Impurity Effects in Spin-Peierls Cuprate CuGeO_3
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