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Zeitschrift für Physik B Condensed Matter
ISSN: 0722-3277 (printed version)
ISSN: 1431-584X (electronic version)
Abstract Volume 103 Issue 2 (1997) pp 293-295
DMRG study of ferromagnetism in a one-dimensional Hubbard model
S. Daul (1), R.M. Noack (2)
(1) Institut de physique théorique, Université de Fribourg, CH-1700 Fribourg, Switzerland
(2) Institut für Theoretische Physik, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
Abstract. The one dimensional Hubbard model with nearest and (negative) next-nearest neighbour hopping has been studied with the density-matrix renormalization group (DMRG) method. A large region of ferromagnetism has been found for finite density and finite on-site interaction.
PACS: 74.25.Ha; 75.10.Lp
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