2000/10/11 by Götz S. Uhrig, G. S. Uhrig, B. Normand · 23 citations
Chemistry · Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Chemistry #Condensed matter physics #Coupling (piping) #Crystallography #Inelastic neutron scattering #Materials science #Multiferroics and related materials #Neutron scattering #Nuclear magnetic resonance #Observable #Phonon #Physics #Quantum mechanics #Scattering #Transition Metal Oxide Nanomaterials #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.63.134418
published in Physical review. B, Condensed matter 63(13) (American Physical Society) · 10 pages, 9 figures
arxiv created 2000/10/11 · openalex publication_date 2001/03/07 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Detailed experiments on single-crystal (VO)2P2O7 continue to reveal new and unexpected features. We show that a model composed of two, independent planes of spin chains with frustrated magnetic coupling is consistent with nuclear-magnetic-resonance and inelastic-neutron-scattering measurements. The pivotal role of PO4 groups in mediating intrachain exchange interactions explains both the presence of two chain types and their extreme sensitivity to certain lattice vibrations, which results in the strong magnetoelastic coupling observed by light scattering. We compute the respective modifications of the spin and phonon dynamics due to this coupling, and illustrate their observable consequences on the phonon frequencies, magnon dispersions, static susceptibility, and specific heat.