Muon Spin Spectroscopy evidence of the violation of Anderson condition in magnetite

Details Muon Spin Spectroscopy evidence of the violation of Anderson condition in magnetite Muon Spin Spectroscopy evidence of the violation of Anderson condition in magnetite

2007-06-22

arxiv.org/abs/0706.3371v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 5 figures, Additional material EPAPS.pdf (2 pages, 2 figure), submitted to Phys. Rev. Lett

Scientific paper

We present new muon spectroscopy data on a Fe$_3$O$_4$ single crystal, revealing different spin precession patterns in five distinct temperature ranges. A careful analysis of the local field and its straightforward modeling obtains surprisingly good agreement with experiments only if a very specific model of localized charges violating Anderson condition, and a correlated muon local dynamics are implemented. Muon evidence for fluctuations just above the Verwey temperature, precursor of the low temperature charge localized state, is provided.

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