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.
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收藏
页数：9
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