Gavilano JL, Mushkolaj S, Ott HR, Millet P, Mila F. LiVGe2O6, an anomalous quasi-1D, S = 1 system, as revealed by NMR.
PHYSICAL REVIEW LETTERS 2000;
85:409-412. [PMID:
10991295 DOI:
10.1103/physrevlett.85.409]
[Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/1999] [Indexed: 05/23/2023]
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.
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