期刊
PHYSICAL REVIEW B
卷 96, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.96.045119
关键词
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资金
- Chinese National Science Foundation [11374275, 11574294, 11474266, 11474267, 91536219]
- National Key Research and Development Program of China [2016YFB0201202]
- Strategic Priority Research Program (B) of the Chinese Academy of Sciences [XDB01030200]
By using a state-of-the-art tensor network state method, we study the ground-state phase diagram of an extended Bose-Hubbard model on the square lattice with frustrated next-nearest-neighbor tunneling. In the hard-core limit, tunneling frustration stabilizes a peculiar half-supersolid phase with one sublattice being superfluid and the other sublattice being Mott insulator away from half filling. In the soft-core case, the model shows very rich phase diagrams above half filling, including three different types of supersolid phases depending on the interaction parameters. The considered model provides a promising route to experimentally search for a novel stable supersolid state induced by frustrated tunneling in the region below half filling with dipolar atoms or molecules.
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