Discussion on the onset of antiferromagnetism in the hubbard model
- 1 January 1976
- journal article
- Published by EDP Sciences in Journal de Physique
- Vol. 37 (12) , 1427-1436
- https://doi.org/10.1051/jphys:0197600370120142700
Abstract
We calculate the response to a periodical external magnetic field of the magnetically disordered phase of the Hubbard model in the alloy analogy approximation. We investigate the behaviour of the q-dependent susceptibility and in particular we look for a possible divergence of the susceptibility for a wave-vector corresponding to an antiferromagnetic ordering. We do not find any instability for a half-filled or nearly half-filled bandKeywords
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