2000/05/12 by D. M. Tennant, D. A. Tennant, Tennant, D. A. +17
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #FOS: Physical sciences #Magnetism in coordination complexes #Physics of Superconductivity and Magnetism #Statistical Mechanics (cond-mat.stat-mech) #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.stat-mech #cond-mat.str-el
paper · pdf · doi:10.48550/arxiv.cond-mat/0005222
10 pages, 4 figures, fig(3) in color
arxiv created 2000/05/12 · openalex publication_date 2000/05/12 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report measurements of the two-magnon states in a dimerized antiferromagnetic chain material, copper nitrate (\QTRgroupCu(NO3)2⋅ 2.5D2O). Using inelastic neutron scattering, we have studied the one- and two-magnon excitation spectra in a large single crystal of this material. We compare this new data with perturbative expansions of the alternating Heisenberg chain and find good agreement with these calculations. The data may also show evidence for the recently proposed S=1 two-magnon bound state (Phys. Rev. B54, R9624 (1996)).