Structural distortions of frustrated quantum spin lattices in high magnetic fields

被引：5

作者：

Derzhko, O

Richter, J

Schulenburg, J

机构：

[1] Natl Acad Sci Ukraine, Inst Condensed Matter Phys, UA-79011 Lvov, Ukraine

[2] Univ Magdeburg, Inst Theoret Phys, D-39016 Magdeburg, Germany

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2005年 / 242卷 / 15期

关键词：

D O I：

10.1002/pssb.200541098

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We study the stability of some strongly frustrated antiferromagnetic spin lattices in high magnetic fields against lattice distortions. In particular, we consider a spin-s anisotropic Heisenberg antiferromagnet on the square-kagome and kagome lattices. The independent localized magnons embedded in a ferromagnetic environment, which are the ground state at the saturation field, imply lattice instabilities for appropriate lattice distortions fitting to the structure of the localized magnons. We discuss in detail the scenario of this spin-Peierls instability in high magnetic fields which essentially depends on the values of the exchange interaction anisotropy Delta and spin s. (c) 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

收藏

页码：3189 / 3194

页数：6

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