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Spin-fluctuations in the quarter-filled Hubbard ring : significances to LiV2O4

J. D. Lee

cond-mat.str-elarXiv:cond-mat/0211261

Abstract

Using the quantum Monte Carlo method, we investigate the spin dynamics of itinerant electrons in the one-dimensional Hubbard system. Based on the model calculation, we have studied the spin-fluctuations in the quarter-filled metallic Hubbard ring, which is aimed at the vanadium ring or chain defined along corner-sharing tetrahedra of LiV2O4, and found the dramatic changes of magnetic responses and spin-fluctuation characteristics with the temperature. Such results can explain the central findings in the recent neutron scattering experiment for LiV2O4.

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