2019/06/30 by D. Blosser, Dominic Blosser, Mladen Horvatić +6
Chemistry · Materials Science · Physics and Astronomy · #Advanced NMR Techniques and Applications #Chemistry #Condensed matter physics #Crystallography #Inelastic neutron scattering #Materials science #Neutron #Neutron scattering #Nuclear magnetic resonance #Nuclear physics #Order (exchange) #Physics #Solid-state spectroscopy and crystallography #Spectroscopy and Quantum Chemical Studies #Spin (aerodynamics) #Thermodynamics #cond-mat.str-el
paper · pdf · doi:10.1103/physrevmaterials.3.074410
published in Physical Review Materials 3(7) (American Physical Society)
openalex publication_date 2019/07/31 · arxiv created 2019/08/01 · arxiv updated 2019/08/02 · openalex created_date 2019/08/13 · openalex updated_date 2026/08/05
The quasi-two-dimensional Heisenberg spin S=1/2 dimer system bis(2-amino-5-fluoro-pyridinium) tetrachlorocuprate(II) is studied by means of inelastic neutron scattering, calorimetry, and nuclear magnetic resonance (NMR) experiments. In the absence of an applied magnetic field we find dispersive triplet excitations with a spin gap of \mathrm\ensuremathΔ=1.112(15) meV and a bandwidth of 0.715(15) meV within the layers and 0.116(15) meV between the layers, respectively. In an applied magnetic field of \ensuremathμ0Hc\ensuremath≈8.5 T the spin gap is closed and we find a field-induced antiferromagnetically ordered phase.