Chiral spin liquid in a two-dimensional helical XY magnet with two chiral order parameters
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The critical properties of an XY helimagnet on a square lattice with two chiral order parameters are studied by Monte Carlo simulations. This model is a modification of the J1-J2-J3 model with J2 = 0. The case of different third range order interactions J3 are considered, J3a ≠ J3b. A first order transition is found away from the Lifshitz points 4J3a= J1 and 4 J3b= J1. It is pointed out that a chiral spin liquid phase possibly exists near the Lifshitz points.
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