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Magnetic correlations in the Hubbard model on triangular and Kagomé lattices
N Bulut1, W Koshibae, S Maekawa
1Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan.
Abstract:
In order to study the magnetic properties of frustrated metallic systems, we present, for the first time, quantum Monte Carlo data on the magnetic susceptibility of the Hubbard model on triangular and kagomé lattices. We show that the underlying lattice structure determines the nature and the doping dependence of the magnetic fluctuations. In particular, in the doped kagomé case we find strong short-range magnetic correlations, which makes the metallic kagomé systems a promising field for studies of superconductivity.
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