I introduce a doped two-dimensional quantum dimer model describing a doped Mott insulator and retaining the original Fermi statistics of the electrons. This model shows a rich phase diagram including a d-wave hole-pair unconventional superconductor at small enough doping and a bosonic superfluid at large doping. The hole kinetic energy is shown to favor binding of topological defects to the bare fermionic holons turning them into bosons, in agreement with arguments based on RVB wave-functions. Results are discussed in the context of cuprates superconductors.
@article{arxiv.0711.2229,
title = {Properties of holons in the Quantum Dimer Model},
author = {Didier Poilblanc},
journal= {arXiv preprint arXiv:0711.2229},
year = {2008}
}
Comments
4 pages, 5 figures, extensive revision, important new data included in Fig.4(a)