Numerical study of magnetization plateaus in the spin-1/2 kagome Heisenberg antiferromagnet
Numerical study of magnetization plateaus in the spin-1/2 kagome Heisenberg antiferromagnet
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DOI：
10.1103/physrevb.88.144416
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发表时间：
2013-10-18
影响因子：
3.7
通讯作者：
Richter, Johannes
中科院分区：
文献类型：
--
作者：
Capponi, Sylvain;Derzhko, Oleg;Richter, Johannes
我们澄清了kagome S = 1/2反铁磁海森堡模型在磁场中的几个磁化高原的存在。使用近似或精确的局域磁振子本征态，我们能够以类似的方式描述每个位置磁化强度m = 1/3, 5/9和7/9的饱和值时发生的平台态。这些结果在63个点的格子上得到了大规模精确对角化的证实。
We clarify the existence of several magnetization plateaus for the kagome S = 1/2 antiferromagnetic Heisenberg model in a magnetic field. Using approximate or exact localized magnon eigenstates, we are able to describe in a similar manner the plateau states that occur for magnetization per site m = 1/3, 5/9, and 7/9 of the saturation value. These results are confirmed using large-scale exact diagonalization on lattices up to 63 sites.