88 citations · 320 across the 7 of their papers we have counts for
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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…
Phase Diagram of a Spin Ladder with Cyclic Four Spin Exchange
A. Laeuchli, G. Schmid, M. Troyer
We present the phase diagram of the Heisenberg model on the two leg ladder with cyclic four spin exchange, determined by a combination of Exact Diagonalization and Density…
Phase Diagram of the quadrumerized Shastry-Sutherland Model
Andreas Laeuchli, Stefan Wessel, Manfred Sigrist
We determine the phase diagram of a generalized Shastry-Sutherland model, using a combination of dimer- and quadrumer-boson methods and numerical exact diagonalization techniques.…