Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2012-03-10
Physics
Condensed Matter
Strongly Correlated Electrons
15 pages, 23 figures
Scientific paper
We carry out Monte-Carlo simulations to discuss critical properties of a classical two-dimensional XY frustrated helimagnet on a square lattice. We find two successive phase transitions upon the temperature decreasing: the first one is associated with breaking of a discrete Z_2 symmetry and the second one is of the Berezinskii-Kosterlitz-Thouless (BKT) type at which the SO(2) symmetry breaks. Thus, a narrow region exists on the phase diagram between lines of the Ising and the BKT transitions that corresponds to a chiral spin liquid.
Sorokin A. O.
Syromyatnikov Arseny V.
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