Exact analysis of ESR shift in the spin-1/2 Heisenberg antiferromagnetic chain

被引：24
|
作者：
Maeda, Y [1 ]
Sakai, K [1 ]
Oshikawa, M [1 ]
机构：
[1] Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 1528551, Japan
来源：
PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 03期
关键词：
Antiferromagnetic materials;
D O I：
10.1103/PhysRevLett.95.037602
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A systematic perturbation theory is developed for the ESR shift and is applied to the spin-1/2 Heisenberg antiferromagnetic chain with a general anisotropic exchange interaction. Using the Bethe ansatz technique, the resonance shift is obtained exactly for the whole range of temperature and magnetic field in the first order of the anisotropy. The obtained g shift strongly depends on magnetic fields at low temperature, showing a significant deviation from the previous classical result.
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页数：4
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