scholarly journals Supersolid phase transitions for hard-core bosons on a triangular lattice

2011 ◽  
Vol 84 (17) ◽  
Author(s):  
Xue-Feng Zhang ◽  
Raoul Dillenschneider ◽  
Yue Yu ◽  
Sebastian Eggert
Keyword(s):  
Phase Transitions ◽  
Triangular Lattice ◽  
Hard Core ◽  
Supersolid Phase

scholarly journals Supersolids of Hard Core - Bosons on a Triangular Lattice

2011 ◽  
Vol 21 (4) ◽  
pp. 301
Author(s):  
Nguyen Toan Thang ◽  
Pham Thi Thanh Nga
Keyword(s):  
Long Range ◽  
Triangular Lattice ◽  
Mean Field Theory ◽  
Mean Field ◽  
Hard Core ◽  
Xxz Model ◽  
Supersolid Phase ◽  
The Mean ◽  
Boson Model ◽  
Broad Region

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.

Phase transitions in the Heisenberg model on a layered triangular lattice in a magnetic field

2021 ◽  
pp. 1-10
Author(s):  
Akai Murtazaev ◽  
Magomedzagir Badiev ◽  
Magomedsheykh Ramazanov ◽  
Magomed Magomedov
Keyword(s):  
Magnetic Field ◽  
Phase Transitions ◽  
Triangular Lattice ◽  
Heisenberg Model
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