47 citations · 130 across the 5 of their papers we have counts for
5 papers
Inhomogeneously doped two-leg ladder systems
Stefan Wessel, Martin Indergand, Andreas Laeuchli +2
A chemical potential difference between the legs of a two-leg ladder is found to be harmful for Cooper pairing. The instability of superconductivity in such systems is analyzed by…
Dimensional crossover in half-filled and lightly doped N-leg Hubbard ladders
Urs Ledermann
We study the dimensional crossover from 1D to 2D in half-filled and lightly doped, weakly interacting N-leg Hubbard ladders. In this case, the Hubbard ladders are equivalent to a N…
Successive opening of the Fermi surface in doped N-leg Hubbard ladders
Urs Ledermann, Karyn Le Hur, T. M. Rice
We study the effect of doping away from half-filling in weakly (but finitely) interacting N-leg Hubbard ladders using renormalization group and bosonization techniques. For a small…
Phases of the two-band model of spinless fermions in one dimension
Urs Ledermann, Karyn Le Hur
We study the two-band model of spinless fermions in one dimension for weak repulsive interactions. In this case, the model is equivalent to the weakly interacting spinless two-leg…
Nonlocality in mesoscopic Josephson junctions with strip geometry
Urs Ledermann, Alban L. Fauchere, Gianni Blatter
We study the current in a clean superconductor-normal-metal-superconductor junction of length d and width w in the presence of an applied magnetic field H. We show that both the ge…