| Issue |
Europhys. Lett.
Volume 57, Number 3, February 2002
|
|
|---|---|---|
| Page(s) | 402 - 408 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2002-00475-5 | |
| Published online | 01 September 2002 | |
Hubbard ladders in a magnetic field
1
Departamento de Fisica, Universidad Nacional de la Plata
C.C. 67, (1900) La Plata, Argentina
2
Facultad de Ingenieria, Universidad Nacional de Lomas de
Zamora Cno. de Cintura y Juan XXIII, (1832) Lomas de Zamora,
Argentina
3
Fakultät für Physik, Albert-Ludwigs-Universität, -
79104 Freiburg, Germany
4
Laboratoire de Physique (URA 1325 du CNRS
associée à l'Ecole Normale Supérieure
de Lyon.) , Groupe de Physique Théorique,
ENS Lyon 46 Allée d'Italie, 69364 Lyon Cédex 07, France
5
Department of Physics and Astronomy, University of British
Columbia V6T 1Z1 Vancouver, B.C., Canada
Received:
31
May
2001
Accepted:
15
November
2001
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.
PACS: 71.10.Fd – Lattice fermion models (Hubbard model, etc.) / 71.10.Pm – Fermions in reduced dimensions (anyons, composite fermions, Luttinger liquid, etc.) / 75.60.Ej – Magnetization curves, hysteresis, Barkhausen and related effects
© EDP Sciences, 2002
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