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arXiv · 1309.4412

Supersolid in a one-dimensional model of hard-core bosons

Tapan Mishra·Ramesh V. Pai·Subroto Mukerjee
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Abstract

We study a system of hardcore boson on a one-dimensional lattice with frustrated next-nearest neighbor hopping and nearest neighbor interaction. At half filling, for equal magnitude of nearest and next-nearest neighbor hopping, the ground state of this system exhibits a first order phase transition from a Bond-Ordered (BO) solid to a Charge-Density-Wave(CDW) solid as a function of the nearest neighbor interaction. Moving away from half filling we investigate the system at incommensurate densities, where we find a SuperSolid (SS) phase which has concurrent off-diagonal long range order and density wave order which is unusual in a system of hardcore bosons in one dimension. Using the finite-size Density-Matrix Renormalization Group (DMRG) method, we obtain the complete phase diagram for this model.

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Tapan Mishra, Ramesh V. Pai, Subroto Mukerjee. 2014-01-24. Supersolid in a one-dimensional model of hard-core bosons. https://doi.org/10.1103/physreva.89.013615

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