104 citations · 105 across the 2 of their papers we have counts for
5 papers
Three-Dimensional Spin Fluctuations in Na0.75CoO2
L. M. Helme, A. T. Boothroyd, R. Coldea +4
We report polarized- and unpolarized-neutron scattering measurements of magnetic excitations in single-crystal Na0.75CoO2. The data confirm ferromagnetic correlations within the co…
Magnetic Studies of Polycrystalline and Single-Crystal NaxCoO2
D. Prabhakaran, A. T. Boothroyd, R. Coldea +2
We have investigated the preparation and bulk magnetic properties of NaxCoO2 in the range 0.5<x<0.95, including those for single crystals grown by the floating-zone method in an im…
Direct Measurement of the Spin Hamiltonian and Observation of Condensation of Magnons in the 2D Frustrated Quantum Magnet Cs2CuCl4
R. Coldea, D. A. Tennant, K. Habicht +3
We propose a method for measuring spin Hamiltonians and apply it to the spin-1/2 Heisenberg antiferromagnet Cs2CuCl4, which shows a 2D fractionalized RVB state at low fields. By ap…
Experimental realization of a 2D fractional quantum spin liquid
R. Coldea, D. A. Tennant, A. M. Tsvelik +1
The ground-state ordering and dynamics of the two-dimensional (2D) S=1/2 frustrated Heisenberg antiferromagnet Cs_2CuCl_4 is explored using neutron scattering in high magnetic fiel…
Two-magnon states in Cu(NO3)2*2.5D2O using inelastic neutron scattering
D. A. Tennant, C. Broholm, Daniel H. Reich +6
We report measurements of the two-magnon states in a dimerized antiferromagnetic chain material, copper nitrate (\QTR{group}{Cu(NO)DO}). Using inelastic…