Staggered magnetism in LiV$_2$O$_4$ at low temperatures probed by the muon Knight shift

Details Staggered magnetism in LiV$_2$O$_4$ at low temperatures probed by the muon Knight shift Staggered magnetism in LiV$_2$O$_4$ at low temperatures probed by the muon Knight shift

2005-04-11

arxiv.org/abs/cond-mat/0504239v2

J. Phys.: Condens. Matter 17, L257-L264 (2005)

Physics

Condensed Matter

Strongly Correlated Electrons

11 pages, 5 figures, sbmitted to J. Phys.: Cond. Matt

Scientific paper

10.1088/0953-8984/17/25/L03

We report on the muon Knight shift measurement in single crystals of LiV2O4. Contrary to what is anticipated for the heavy-fermion state based on the Kondo mechanism, the presence of inhomogeneous local magnetic moments is demonstrated by the broad distribution of the Knight shift at temperatures well below the presumed "Kondo temperature" ($T^*\simeq 30$ K). Moreover, a significant fraction ($\simeq10$ %) of the specimen gives rise to a second component which is virtually non-magnetic. These observations strongly suggest that the anomalous properties of LiV2O4 originates from frustration of local magnetic moments.

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