Magnetization process of the S = 1/2 Heisenberg antiferromagnet on the floret pentagonal lattice. (14th December 2021)

• Record Type: Journal Article
• Authors: Furuchi, Rito; Nakano, Hiroki; Todoroki, Norikazu; Sakai, Toru
• Is Part Of: Journal of physics communications. Volume 5:Number 12(2021)
• Publication Date: 2021-12-14
• Subjects: The S = 1/2 Heisenberg antiferromagnet -- floret pentagonal lattice -- magnetization plateaux -- magnetization jump -- numerical diagonalization; Physics -- Periodicals; 530.05
• DOI: 10.1088/2399-6528/ac3f7a
• Languages: English
• ISSNs: 2399-6528

Abstract

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.