Frustrated spin ladder with alternating spin-1 and spin-1/2 rungs

  title={Frustrated spin ladder with alternating spin-1 and spin-1/2 rungs},
  author={V. Chandra and N. Ivanov and J. Richter},
  journal={Physical Review B},
We study the impact of the diagonal frustrating couplings on the quantum phase diagram of a two-leg ladder composed of alternating spin-1 and spin-$\frac{1}{2}$ rungs. As the coupling strength is increased the system successively exhibits two gapped paramagnetic phases (a rung-singlet and a Haldane-type nondegenerate states) and two ferrimagnetic phases with different ferromagnetic moments per rung. The first two states are similar to the phases studied in the frustrated spin-$\frac{1}{2… Expand

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