Numerical study of magnetization plateaus in the spin-1/2 Heisenberg antiferromagnet on the checkerboard lattice

被引：11

作者：

Capponi, Sylvain ^{[1
,2
]}

机构：

[1] Univ Toulouse, CNRS, IRSAMC, Phys Theor Lab, F-31062 Toulouse, France

[2] Boston Univ, Dept Phys, 590 Commonwealth Ave, Boston, MA 02215 USA

来源：

PHYSICAL REVIEW B | 2017年 / 95卷 / 01期

关键词：

ORDER; GAP;

D O I：

10.1103/PhysRevB.95.014420

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present numerical evidence that the spin-1/2 Heisenberg model on the two-dimensional checkerboard lattice exhibits several magnetization plateaus for m = 0, 1/4, 1/2, and 3/4, where m is the magnetization normalized by its saturation value. These incompressible states correspond to somewhat similar valence-bond crystal phases that break lattice symmetries, though they are different from the already established plaquette phase for m = 0. Our results are based on exact diagonalization as well as density-matrix renormalization-group large-scale simulations and interpreted in terms of simple parameter-free trial wave functions.

引用

页数：7

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