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Matsuda, M.; Katsumata, Kenji; Eisaki, H.; Motoyama, N.; Uchida, S.; Shapiro, Stuart; Shirane, G.

doi:10.1103/physrevb.54.12199

Cited by 101 publications

(51 citation statements)

References 23 publications

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“…As Matsuda et al 11,12 showed, the simple chain in Sr 14 Cu 24 O 41 also has an interesting singlet ground state originating from a dimerization. Surprisingly, the dimers are formed between spins which are separated by 2 and 4 times the distance between the nearest-neighbor (n.n.)…”

Section: Introductionmentioning

confidence: 97%

“…Thus, the intrinsic linewidth of the inelastic peaks we observed here is almost resolution-limited. Note that in the previous paper 12 we reported the constant-Q scans at (0,3,-L) since the focusing condition was different for the spectrometer. The inelastic peak positions slightly change with Q which follows the ω-Q dispersion relation 12 as shown in the inset of Fig.…”

Section: Magnetic Excitationsmentioning

confidence: 99%

“…Furthermore, we concentrated on the samples with low concentration of yttrium to study systematically how the dimerized state is changed since the dimerized state is destroyed with only a small amount of yttrium substitution. 12 It was observed that when yttrium is lightly substituted for strontium, strong and sharp magnetic inelastic peaks which originate from the dimerized state in the chain become broader. With further yttrium substitution, the inelastic peaks become much broader and the excitation energy is decreased.…”

Section: Introductionmentioning

confidence: 99%

“…The magnetic inelastic peaks become broader in energy with yttrium substitution. 12 Furthermore, La 6 Ca 8 Cu 24 O 41 in which N h =0 shows a long-range magnetic order with ferromagnetic correlations within the chain. 13,14 We have performed neutron scattering experiments to study the effects of yttrium substitution on the magnetic and structural properties of the chains in Sr 14 Cu 24 O 41 .…”

Section: Introductionmentioning

confidence: 99%

“…We previously reported the results of neutron scattering experiments using polycrystalline samples of Sr 14−x Y x Cu 24 O 41 (x=0, 1, and 3). 12 In order to make a detailed study of the magnetic excitation in a wide range of energy (ω) -momentum (Q) space and the crystallographic structure, we performed new experiments on high quality single crystals. Furthermore, we concentrated on the samples with low concentration of yttrium to study systematically how the dimerized state is changed since the dimerized state is destroyed with only a small amount of yttrium substitution.…”

Section: Introductionmentioning

confidence: 99%

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Magnetic excitations and structural change in theS=12quasi-one-dimensional magnetSr14−x<

et al. 1997

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Neutron scattering measurements have been performed on the S= 1 2 quasi-one-dimensional system Sr14−xYxCu24O41, which has both simple chains and two-leg ladders of copper ions. We observed that when a small amount of yttrium is substituted for strontium, which is expected to reduce the number of holes, the dimerized state and the structure in the chain are changed drastically. The inelastic peaks originating from the dimerized state of the chain becomes broader in energy but not in momentum space. This implies that the dimerized state becomes unstable but the spin correlations are unchanged with yttrium substitution. Furthermore, it was observed that nuclear Bragg peak intensities originating from the chain show strong temperature and x dependence, which suggests that the chains slide along the c axis as temperature and x are varied.

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Section: Introductionmentioning

confidence: 97%

Section: Magnetic Excitationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%