20 citations · 39 across the 2 of their papers we have counts for
4 papers
Emergence of Irrationality: Magnetization Plateaux in Modulated Hubbard Chains
D. C. Cabra, A. De Martino, A. Honecker +2
Hubbard chains with periodically modulated coupling constants in a magnetic field exhibit gaps at zero temperature in their magnetic and charge excitations in a variety of situatio…
Doping-dependent magnetization plateaux in p-merized Hubbard chains
D. C. Cabra, A. De Martino, A. Honecker +2
We study zero-temperature Hubbard chains with periodically modulated hopping at arbitrary filling n and magnetization m. We show that the magnetization curves have plateaux at cert…
Magnetization Plateaux in N-Leg Spin Ladders
D. C. Cabra, A. Honecker, P. Pujol
In this paper we continue and extend a systematic study of plateaux in magnetization curves of antiferromagnetic Heisenberg spin-1/2 ladders. We first review a bosonic field-theore…
Magnetization Curves of Antiferromagnetic Heisenberg Spin-1/2 Ladders
D. C. Cabra, A. Honecker, P. Pujol
Magnetization processes of spin-1/2 Heisenberg ladders are studied using strong-coupling expansions, numerical diagonalization of finite systems and a bosonization approach. We fin…