Phase Diagram of Spinless Fermions on an Anisotropic Triangular Lattice at Half-filling

Details Phase Diagram of Spinless Fermions on an Anisotropic Triangular Lattice at Half-filling Phase Diagram of Spinless Fermions on an Anisotropic Triangular Lattice at Half-filling

2006-07-27

arxiv.org/abs/cond-mat/0607717v1

Physics

Condensed Matter

Strongly Correlated Electrons

4pages 6figures

Scientific paper

The strong coupling phase diagram of the spinless fermions on the anisotropic triangular lattice at half-filling is presented. The geometry of inter-site Coulomb interactions rules the phase diagram. Unconventional charge ordered phases are detected which are the recently reported pinball liquid and the striped chains. Both are induced by the quantum dynamics out of classical disordered states and afford extremely correlated metallic states and the particular domain wall-type of excitations, respectively. The disorder once killed by the quantum effect revives at the finite temperature, which is discussed in the terms of the organic $\theta$-ET$_2X$.

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