Observation of Spin Freezing in CaV4O9 and CaV2O5 by uSR

Details Observation of Spin Freezing in CaV4O9 and CaV2O5 by uSR Observation of Spin Freezing in CaV4O9 and CaV2O5 by uSR

1997-09-10

arxiv.org/abs/cond-mat/9709123v1

Physics

Condensed Matter

Strongly Correlated Electrons

14 pages, including 4 figures (.ps, included). Submitted to Phys. Rev. Lett

Scientific paper

We have performed muon spin relaxation and susceptibility measurements of CaV_4O_9 and CaV_2O_5, systems in which spin gap-like behavior has been found. We observe spin freezing in the two compounds below 12K and 50K, respectively. Our results indicate the possibility that a substantial fraction of the of the vanadium magnetic moment is not in a spin singlet sate at low temperatures in either material.

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