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arXiv · 2112.03516

Magnetization process of the S=1/2 Heisenberg antiferromagnet on the floret pentagonal lattice

Rito Furuchi·Hiroki Nakano·Norikazu Todoroki·Toru Sakai
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Abstract

We study the S=1/2 Heisenberg antiferromagnet on the floret pentagonal lattice by numerical diagonalization method. This system shows various behaviours that are different from that of the Cairo-pentagonal-lattice antiferromagnet. The ground-state energy without magnetic field and the magnetization process of this system are reported. Magnetization plateaux appear at one-ninth height of the saturation magnetization, at one-third height, and at seven-ninth height. The magnetization plateaux at one-third and seven-ninth heights come from interactions linking the sixfold-coordinated spin sites. A magnetization jump appears from the plateau at one-ninth height to the plateau at one-third height. Another magnetization jump is observed between the heights corresponding to the one-third and seven-ninth plateaux; however the jump is away from the two plateaux, namely, the jump is not accompanied with any magnetization plateaux. The jump is a peculiar phenomenon that has not been reported.

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Rito Furuchi, Hiroki Nakano, Norikazu Todoroki, Toru Sakai. 2021-12-07. Magnetization process of the S=1/2 Heisenberg antiferromagnet on the floret pentagonal lattice. https://doi.org/10.1088/2399-6528%2Fac3f7a

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