Multiple magnetization plateaus induced by farther neighbor interaction in an two-leg Heisenberg spin ladder
arXiv:2102.07473 · doi:10.1103/PhysRevB.104.214409
Abstract
We study the magnetization process of the Heisenberg model on a two-leg ladder with farther neighbor spin-exchange interaction. We consider the interaction that couples up to the next-nearest neighbor rungs and find an exactly solvable regime where the ground states become product states. The next-nearest neighbor interaction tends to stabilize magnetization plateaus at multiples of 1/6. In most of the exactly solvable regime, a single magnetization curve shows two series of plateaus with different periodicities.
8 pages, 5 figures
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