294 citations · 2.3k across the 53 of their papers we have counts for
11 papers · 1 filter
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…
Ferromagnetism and large negative magnetoresistance in Pb doped Bi-Sr-Co-O misfit-layer compound
I. Tsukada, T. Yamamoto, M. Takagi +3
Ferromagnetism and accompanying large negative magnetoresistance in Pb-substituted Bi-Sr-Co-O misfit-layer compound are investigated in detail. Recent structural analysis of (Bi,Pb…
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…
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…
Spin-phonon coupled modes in the incommensurate phases of doped CuGeO
K. Takehana, T. Takamasu, M. Hase +3
The doping effect of the folded phonon mode at 98 cm was investigated on the Si-doped CuGeO by magneto-optical measurements in far-infrared (FIR) region under high magne…
Energy separation of single-particle and continuum states in a S=1/2 weakly-coupled chains antiferromagnet
A. Zheludev, M. Kenzelmann, S. Raymond +7
Inelastic neutron scattering is used to study transverse-polarized magnetic excitations in the quasi-one-dimensional S=1/2 antiferromagnet BaCu_2Si_2O_7, where the saturation value…
Thermal conductivity of pure and Mg-doped CuGeO_3 in the incommensurate phase
J. Takeya, I. Tsukada, Yoichi Ando +5
The thermal conductivity κof Cu_1-xMg_xGeO_3 is measured in magnetic fields up to 16 T. At the transition field H_c to the high-field incommensurate (I) phase, κabruptly decreases.…
Thermal conductivity of Mg-doped CuGeO_3 at very low temperatures: Heat conduction by antiferromagnetic magnons
J. Takeya, I. Tsukada, Yoichi Ando +2
Thermal conductivity κis measured at very low temperatures down to 0.28 K for pure and Mg-doped CuGeO_3 single crystals. The doped samples carry larger amount of heat than the pure…
Weak ferromagnetism of quasi-one-dimensional S=1/2 antiferromagnet BaCuGeO
I. Tsukada, J. Takeya, T. Masuda +1
Weak ferromagnetism of quasi-one-dimensional S = 1/2 antiferromagnet BaCuGeO is studied by the magnetization measurement. The spontaneous magnetization appears along th…
Critical neutron scattering study of the compositional phase transition in Mg-doped CuGeO3
M. Nishi, H. Nakao, Y. Fujii +3
Cu1-xMgxGeO3 undergoes a first-order phase transition at a critical concentration xc between an antiferromagnetic (AF) state on dimerized lattice (D-AF) and an AF Neel state on und…
Magnetic excitations in coupled Haldane spin chains near the quantum critical point
A. Zheludev, T. Masuda, I. Tsukada +4
Two quasi-1-dimensional S=1 quantum antiferromagnetic materials, PbNi2V2O8 and SrNi2V2O8, are studied by inelastic neutron scattering on powder samples. While magnetic interactions…