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21 papers · 2 filters
Magnetic order and spin-waves in the quasi-1D S=1/2 antiferromagnet
M. Kenzelmann, A. Zheludev, S. Raymond +7
Elastic and inelastic neutron scattering were used to study the ordered phase of the quasi-one-dimensional spin-1/2 antiferromagnet . The previously prop…
X-ray Scattering and Magnetic Susceptibility Study of doped CuGeO_3
Y. J. Wang, Y. J. Kim, R. J. Christianson +6
We report comprehensive synchrotron x-ray scattering and magnetic susceptibility studies of the doped spin-Peierls materials Cu_{1-x}Zn_xGeO_3 and CuGe_{1-y}Si_yO_3. Temperature ve…
Correlated Polarons in Dissimilar Perovskite Manganites
C. S. Nelson, M. v. Zimmermann, J. P. Hill +10
We report x-ray scattering studies of broad peaks located at a (0.5 0 0)/(0 0.5 0)-type wavevector in the paramagnetic insulating phases of La_{0.7}Ca_{0.3}MnO_{3} and Pr_{0.7}Ca_{…
Macroscopic and Local Magnetic Moments in Si-doped CuGeO with Neutron and SR Studies
F. Semadeni, A. Amato, B. Roessli +5
The temperature-concentration phase diagram of the Si-doped spin-Peierls compound CuGeO is investigated by means of neutron scattering and muon spin rotation spectroscopy in…
Vertical Boundary at x ~ 0.11 in the Structural Phase Diagram of the La1-xSrxMnO3 System (0.08 <= x <= 0.125)
D. E. Cox, T. Iglesias, E. Moshopoulou +3
The structural phase diagram of the La1-xSrxMnO3 system in the compositional range 0.08 <= x <= 0.125 has been investigated by high-resolution synchrotron x-ray powder diffraction…
Continuum in the spin excitation spectrum of a Haldane chain, observed by neutron scattering in CsNiCl3
I. A. Zaliznyak, S. -H. Lee, S. V. Petrov
The spin excitation continuum, expected to dominate the low-energy fluctuation spectrum in the Haldane spin chain around the Brillouin zone center, q=0, is directly observed by ine…