Preprint article · Journal article
Neutron scattering study of two-magnon states in the quantum magnet copper nitrate
We report measurements of the two-magnon states in a dimerized antiferromagnetic chain material, copper nitrate [Cu(NO3)(2).2.5D(2)O]. Using inelastic neutron scattering we have measured the one- and two-magnon excitation spectra in a large single crystal. The data are in excellent agreement with a perturbative expansion of the alternating Heisenberg Hamiltonian from the strongly dimerized limit.
The expansion predicts a two-magnon bound state for qsimilar to(2n+1)pid which is consistent with the neutron scattering data.
Language: | English |
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Year: | 2003 |
Pages: | 11 |
ISSN: | 10953795 , 01631829 , 1550235x and 10980121 |
Types: | Preprint article and Journal article |
DOI: | 10.1103/PhysRevB.67.054414 |