Neutron scattering evidence for isolated spin- ladders in
- 18 September 2009
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 80 (9) , 094411
- https://doi.org/10.1103/physrevb.80.094411
Abstract
Inelastic neutron scattering was used to determine the spin Hamiltonian for the singlet ground-state system of fully deuterated BPCB, . A two-leg spin-1/2 ladder model, with and , accurately describes the data. The experimental limit on the effective interladder exchange constant is , and the limit on total diagonal, intraladder exchange is . Including the effects of copper to bromide covalent spin transfer on the magnetic form factor, the experimental ratios of intraladder bond energies are consistent with the predictions of continuous unitary transformation.
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