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11 papers · 2 filters
Spin Dynamics of the Spin-1/2 Kagome Lattice Antiferromagnet ZnCu_3(OH)_6Cl_2
J. S. Helton, K. Matan, M. P. Shores +9
We have performed thermodynamic and neutron scattering measurements on the S=1/2 kagome lattice antiferromagnet Zn Cu_3 (OH)_6 Cl_2. The susceptibility indicates a Curie-Weiss temp…
Magnetic Excitation Spectrum of the Square Lattice S=1/2 Heisenberg Antiferromagnet K2V3O8
M. D. Lumsden, S. E. Nagler, B. C. Sales +4
We have explored the magnetic excitation spectrum of the S=1/2 square lattice Heisenberg antiferromagnet, K2V3O8 using both triple-axis and time-of-flight inelastic neutron scatter…
Excitations from a Bose-Einstein condensate of magnons in coupled spin ladders
V. O. Garlea, A. Zheludev, T. Masuda +9
The weakly coupled quasi-one-dimensional spin ladder compound (CH)CHNHCuCl is studied by neutron scattering in magnetic fields exceeding the critical field of Bose-…
Complex magnetic order in the kagome staircase compound Co3V2O8
Y. Chen, J. W. Lynn, Q. Huang +9
Co3V2O8 (CVO) has a geometrically frustrated magnetic lattice, a Kagome staircase. The crystal structure consists of two inequivalent Co sites, one-dimensional chains of Co(2) spin…
Incident-energy and polarization dependent RIXS study of La2CuO4
L. Lu, J. N. Hancock, G. Chabot-Couture +7
We present a detailed Cu K-edge resonant inelastic X-ray scattering (RIXS) study of the Mott insulator La2CuO4 in the 1-7 eV energy transfer range. As initially found for the high-…
Stoichiometric oxygen content in NaxCoO2
L. Viciu, Q. Huang, R. J. Cava
The crystal structure and oxygen stoichiometry in two-layer Na0.74CoO2 and Na0.38CoO2 at room temperature are analyzed by powder neutron diffraction. Two sets of diffraction data f…