Hubbard ladders in a magnetic field
D. C. Cabra, A. De Martino, P. Pujol, P. Simon
Abstract
The behavior of a two leg Hubbard ladder in the presence of a magnetic field is studied by means of Abelian bosonization. We predict the appearance of a new (doping dependent) plateau in the magnetization curve of a doped 2-leg spin ladder in a wide range of couplings. We also discuss the extension to N-leg Hubbard ladders.
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