Modulation of local magnetization in two-dimensional axial-next-nearest-neighbor Ising model

被引：8

作者：

Derian, Rene ^{[1
]}

Gendiar, Andrej

Nishino, Tomotoshi

机构：

[1] Slovak Acad Sci, Inst Phys, SK-84511 Bratislava, Slovakia

[2] Slovak Acad Sci, Inst Elect Engn, SK-84104 Bratislava, Slovakia

[3] Kobe Univ, Fac Sci, Dept Phys, Kobe, Hyogo 6578501, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2006年 / 75卷 / 11期

关键词：

incommensurate phase; ANNNI model; DMRG;

D O I：

10.1143/JPSJ.75.114001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The axial next-nearest-neighbor Ising model is studied in two dimensions at finite temperature using the density matrix renormalization group. The model exhibits phase transition of the second-order between the antiphase in low temperature and the modulated phase in high temperature. Observing the domain wall free energy, we confirm that the modulation period in high-temperature side is well explained by the free-fermion picture.

引用

页数：5