Metamagnetic jump in the spin-1/2 antiferromagnetic Heisenberg model on the square kagome lattice

被引：20

作者：

Hasegawa, Yasumasa ^{[1
]}

Nakano, Hiroki ^{[1
]}

Sakai, Toru ^{[1
]}

机构：

[1] Univ Hyogo, Grad Sch Mat Sci, Dept Mat Sci, 3-2-1 Kouto, Kamigori, Hyogo 6781297, Japan

来源：

PHYSICAL REVIEW B | 2018年 / 98卷 / 01期

关键词：

BOSE-EINSTEIN CONDENSATION; MAGNETIZATION PROCESS; EXACT SPECTRA; ORDER;

D O I：

10.1103/PhysRevB.98.014404

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetization process of the spin-1/2 antiferromagnetic Heisenberg model on two-dimensional square-kagome lattice is studied theoretically. The metamagnetic jumps exist in the magnetization process at the higher edge of the 1/3 and 2/3 plateaus. The parameter-dependencies of the critical field and the magnitude of the magnetization jump at the higher edge of the 1 /3 plateau are obtained by using the approximated state in the unit cell and compared with the numerical results of the exact diagonalization of 42 sites.

引用

页数：9

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