title: LiVGe2O6, an anomalous quasi-1D, S = 1 system, as revealed by NMR
abstract: We report the results of 7Li nuclear magnetic resonance (NMR) studies of LiVGe2O6, a quasi-one-dimensional spin S = 1 model system, at low temperatures. Our data, including NMR spectra and the temperature dependence of the spin-lattice relaxation rate T-11, indicate that a first-order phase transition occurs at T(c) approximately 23 K. The NMR response of LiVGe2O6 below T(c) suggests that the ordered phase is antiferromagnetic and has unusual features. Possible reasons for this unexpected behavior are discussed.
authors.affiliation: Laboratorium fur Festkorperphysik, ETH-Honggerberg, CH-8093 Zurich, Switzerland.
authors.initials: JL
authors.lastname: Gavilano
authors.initials: S
authors.lastname: Mushkolaj
authors.initials: HR
authors.lastname: Ott
authors.initials: P
authors.lastname: Millet
authors.initials: F
authors.lastname: Mila