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Supersolid of Hardcore Bosons on the Face Centered Cubic Lattice

Takahumi Suzuki·Naoki Kawashima
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Abstract

We investigate a supersolid state in hardcore boson models on the face-centered-cubic (FCC) lattice. The supersolid state is characterized by a coexistence of crystalline order and superfluidity. Using a quantum Monte Carlo method based on the directed-loop algorithm, we calculate static structure factors and superfluid density at finite temperature, from which we obtain the phase diagram. The supersolid phase exists at intermediate fillings between a three-quarter-filled solid phase and a half-filled solid phase. We also discuss the mechanism of the supersolid state on the FCC lattice.

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Takahumi Suzuki, Naoki Kawashima. 2007-08-07. Supersolid of Hardcore Bosons on the Face Centered Cubic Lattice. https://doi.org/10.1103/physrevb.75.180502

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