2000/07/31 by B. Grenier, O. Cépas, O. Cepas +14 · 1 citation
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Atomic physics #Charge (physics) #Charge ordering #Condensed matter physics #Excitation #Inelastic neutron scattering #Inelastic scattering #Magnetic and transport properties of perovskites and related materials #Neutron scattering #Order (exchange) #Phase (matter) #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Scattering #Spin (aerodynamics) #Zigzag #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.86.5966
4 pages, 5 figures, to appear in Phys. Rev. Lett
arxiv created 2001/04/25 · openalex publication_date 2001/06/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We report high-resolution neutron inelastic scattering experiments on the spin excitations of NaV(2)O(5). Below T(c), two branches with distinct energy gaps are identified. From the dispersion and intensity of the spin excitation modes, we deduce the precise zigzag charge distribution on the ladder rungs and the corresponding charge order: Delta(c) approximately 0.6. We argue that the spin gaps observed in the low-T phase of this compound are primarily due to the charge transfer.