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Magnetic Properties of the Infinitely Repulsive Hubbard Model Near Half Filling


Many theoretical works discuss the magnetic properties of the strongly repulsive Hubbard model near half filling. Several authors suggest that the system which contains a few holes does not behave as a ferromagnet, unlike in the one-hole case described by Nagaoka's famous result. We discuss the finite temperature properties of finite lattices. Using an efficient Monte Carlo method magnetic and specific heat results are presented for a 10 by 10 lattice with two holes. Our results show that the magnetization increases with decreasing temperature for such a finite system.

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Gurin, P., Gulácsi, Z. Magnetic Properties of the Infinitely Repulsive Hubbard Model Near Half Filling. Czechoslovak Journal of Physics 52, 119–122 (2002).

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