Abstract
We perform Monte Carlo simulation of the ferroelectricity induced by spiral spin order in spin-1/2 LiCu2O2 based on the Mostovoy phenomenological theory. The simulated spiral spin order parameter and ferroelectric polarization, respectively, as a function of temperature and magnetic field are compared with recent experiments. The substantial differences in several aspects of the multiferroicity between the simulation and experiments allow a reasonable argument that the spiral spin order may not be the unique origin for the ferroelectricity generation.
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