Correlations in Quantum Spin Ladders with Site and Bond Dilution

@article{Trinh2012CorrelationsIQ,
  title={Correlations in Quantum Spin Ladders with Site and Bond Dilution},
  author={Kien Trinh and Stephan Haas and R Yu and Tommaso Roscilde},
  journal={Physical Review B},
  year={2012},
  volume={85},
  pages={035134}
}
Laboratoire de Physique, Ecole Normale Superieure de Lyon, 46 Allee d’Italie, 69003 Lyon, France(Dated: May 3, 2011)We investigate the e ects of quenched disorder, in the form of site and bond dilution, on thephysics of the S = 1=2 antiferromagnetic Heisenberg model on even-leg ladders. Site dilutionis found to prune rung singlets and thus create localized moments which interact via a random,unfrustrated network of e ective couplings, realizing a random-exchange Heisenberg model (REHM)in one… Expand
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References

SHOWING 1-3 OF 3 REFERENCES
Introduction to percolation theory
Preface to the Second Edition Preface to the First Edition Introduction: Forest Fires, Fractal Oil Fields, and Diffusion What is percolation? Forest fires Oil fields and fractals Diffusion inExpand
* Electronic address: ktrinh@usc
    The notion of local gap is associated to the local susceptibility at site i, χi = (1/β) β 0 dτ Si(τ )Si(0)