Supersolids of Hard Core - Bosons on a Triangular Lattice
Keyword(s):
The Mean
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We study the boson model on a triangular lattice interacting only via on-site hardcore repulsion by mapping to a system of spins $(S = 1/2)$. We investigate the supersolid phase of the systems which is a state matter displaying both diagonal long- range (solid) order as well as off-diagonal long-range (superfluidity) by utilizing a semionic representation for the spin-XXZ model. We show that the supersolid order is stable in the mean-field theory for a broad region of parameters. The inclusion of spin wave corrections modifies this picture, but the supersolid phase is still quite robust on the triangular lattices.
2012 ◽
Vol 147
(5)
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pp. 1020-1040
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1994 ◽
Vol 08
(20)
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pp. 1253-1260
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1987 ◽
Vol 58
(21)
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pp. 2245-2248
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1977 ◽
Vol 67
(8)
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pp. 3636-3641
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1991 ◽
Vol 17
(12)
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pp. 1871-1884
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