Reduced dimensionality in layered quantum dimer magnets: Frustration vs. inhomogeneous condensates

@article{Rosch2007ReducedDI,
  title={Reduced dimensionality in layered quantum dimer magnets: Frustration vs. inhomogeneous condensates},
  author={Oliver Rosch and Matthias Vojta},
  journal={Physical Review B},
  year={2007},
  volume={76},
  pages={224408}
}
Motivated by recent experiments on BaCuSi2O6, we investigate magnetic excitations and quantum phase transitions of layered dimer magnets with inter-layer frustration. We consider two scenarios, (A) a lattice with one dimer per unit cell and perfect inter-layer frustration, and (B) an enlarged unit cell with inequivalent layers, with and without perfect frustration. In all situations, the critical behavior at asymptotically low temperatures is three-dimensional, but the corresponding crossover… Expand
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