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Anisotropic three-dimensional magnetism in CaFe2As2
(American Physical Society, 2008-11-28)
Inelastic neutron scattering measurements of the magnetic excitations in CaFe2As2 indicate that the spin wave velocity in the Fe layers is exceptionally large and similar in magnitude to the cuprates. However, the spin ...
Neutron scattering evidence for isolated spin-1/2 ladders in (C5D12N)2CuBr4
(American Physical Society, 2009-09-01)
Inelastic neutron scattering was used to determine the spin Hamiltonian for the singlet ground-state system of fully deuterated BPCB, (C5D12N)2CuBr4. A two-leg spin-1/2 ladder model, with J⊥=(1.09±0.01) meV and J∥=(0.296±0.005) ...