Supersolid hardcore bosons on the triangular lattice

Details Supersolid hardcore bosons on the triangular lattice Supersolid hardcore bosons on the triangular lattice

2005-05-11

arxiv.org/abs/cond-mat/0505298v1

Phys. Rev. Lett. 95 127205 (2005)

Physics

Condensed Matter

Other Condensed Matter

4 pages with 8 figures

Scientific paper

10.1103/PhysRevLett.95.127205

We determine the phase diagram of hardcore bosons on a triangular lattice with nearest neighbor repulsion, paying special attention to the stability of the supersolid phase. Similar to the same model on a square lattice we find that for densities $\rho<1/3$ or $\rho>2/3$ a supersolid phase is unstable and the transition between a commensurate solid and the superfluid is of first order. At intermediate fillings $1/3 < \rho < 2/3$ we find an extended supersolid phase even at half filling $\rho=1/2$.

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