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.

Jan 1, 20022 citations

Hubbard ladders in a magnetic field

D. C. Cabra, A. De Martino, Pierre Pujol +1 more

The behavior of a 2-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 in a wide range of couplings. We also briefly discuss the extension to N -leg Hubbard ladders.

arXiv:cond-mat/0012235Europhysics Letters (EPL)Feb 1, 20029 citations