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

Abstract

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" ($T^{\ast }\simeq 30$ K). Moreover, a significant fraction ($\simeq 10$ %) 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.

arXiv comment11 pages, 5 figures, sbmitted to J. Phys.: Cond. Matt

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• Effective Hamiltonian of Three-orbital Hubbard Model on Pyrochlore Lattice: Application to LiV_2O_4
• Magnetic ground state of pyrochlore oxides close to metal-insulator boundary probed by muon spin rotation
• Dynamic spin susceptibility of paramagnetic spinel LiV2O4
• Metallic Spin Liquid-like Behavior of LiV${}_2$O${}_4$
• Quest for the Origin of Heavy Fermion Behavior in $d$-Electron Systems