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Multi-step magnetization of the Ising model on a Shastry-Sutherland lattice: a Monte Carlo simulation
1Institute for Advanced Materials, South China Academy of Advanced Photonics Engineering, South China Normal University, Guangzhou 510006, People's Republic of China.
Abstract:
The magnetization behaviors and spin configurations of the classical Ising model on a Shastry-Sutherland lattice are investigated using Monte Carlo simulations, in order to understand the fascinating magnetization plateaus observed in TmB(4) and other rare-earth tetraborides. The simulations reproduce the 1/2 magnetization plateau by taking into account the dipole-dipole interaction. In addition, a narrow 2/3 magnetization step at low temperature is predicted in our simulation. The multi-step magnetization can be understood as the consequence of the competitions among the spin-exchange interaction, the dipole-dipole interaction, and the static magnetic energy.
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