STRING CORRELATIONS OF THE ANTIFERROMAGNETIC SPIN-1 CHAIN - EXCITED-STATES AND MAGNETIC-FIELD EFFECTS

被引：13

作者：

ELSTNER, N ^{[1
]}

MIKESKA, HJ ^{[1
]}

机构：

[1] UNIV HANNOVER,INST THEORET PHYS,D-30167 HANNOVER,GERMANY

来源：

PHYSICAL REVIEW B | 1994年 / 50卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.50.3907

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We calculate energies and wave functions of S = 1 antiferromagnetic Heisenberg chains with single-ion anisotropy in a symmetry-breaking external magnetic field. From results for the string correlation function for low-lying excited states we identify these states as solitons with respect to the hidden string order. For finite anisotropic chains we investigate the transition to the fully magnetized state at high magnetic fields and conclude that Bose condensation in an external magnetic field occurs also for the anisotropic chain.

引用

页码：3907 / 3912

页数：6

共 27 条

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