211 citations · 3.1k across the 86 of their papers we have counts for
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cond-mat.str-el2002★ 30 cited
Rung-singlet phase of the S=1/2 two-leg spin-ladder with four-spin cyclic exchange
K. P. Schmidt, H. Monien, G. S. Uhrig
Using continuous unitary transformations (CUT) we calculate the one-triplet gap for the antiferromagnetic S=1/2 two-leg spin ladder with additional four-spin exchange interactions…
cond-mat.str-el2002★ 126 cited
Excitations in one-dimensional S=1/2 quantum antiferromagnets
Kai P. Schmidt, Götz S. Uhrig
The transition from dimerized to uniform phases is studied in terms of spectral weights for spin chains using continuous unitary transformations (CUTs). The spectral weights in the…
cond-mat.str-el2002★ 6 cited
Thermodynamic Properties of Spin Ladders with Cyclic Exchange
Alexander Buehler, Ute Loew, Kai P. Schmidt +1
By high temperature series expansion and exact complete diagonalization the magnetic susceptibility chi(T) and the specific heat C(T) of a two-leg S=1/2 ladder with cyclic (4-spin)…