Nagaoka Ferromagnetism in the Two-Dimensional Infinite-UHubbard Model
نویسندگان
چکیده
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We revisit Nagaoka ferromagnetism in the two-dimensional U = ∞ Hubbard model using the dynamical mean-field theory (DMFT). A recently developed continuous time quantum Monte Carlo method is applied to solve the DMFT impurity problem. The stability of Nagaoka ferromagnetism is studied as a function of both the nearest-neighbor lattice hopping t and the next-nearest-neighbor lattice hopping t. It...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2001
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.86.3396