Magnetic anisotropy of BaCu2Si2O7:: Theory and antiferromagnetic resonance -: art. no. 184414

被引：9

作者：

Hayn, R ^{[1
]}

Pashchenko, VA

Stepanov, A

Masuda, T

Uchinokura, K

机构：

[1] Fac Sci & Tech St Jerome, CNRS, Lab Mat & Microelect Provence, F-13397 Marseille 20, France

[2] Ukrainian Acad Sci, Inst Low Temp Phys & Engn, UA-310164 Kharkov, Ukraine

[3] Univ Tokyo, Dept Adv Mat Sci, Bunkyo Ku, Tokyo 1138656, Japan

来源：

PHYSICAL REVIEW B | 2002年 / 66卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.66.184414

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Antiferromagnetic resonance (AFMR) of BaCu2Si2O7 and a microscopic theory for the magnetic anisotropy of spin-1/2 chain compounds with folded CuO3 geometry being in good agreement with the available data are presented. The AFMR studies at 4.2 K show the existence of two gaps (40 and 76 GHz) at zero magnetic field and of two spin reorientation transitions for Hparallel toc. The microscopic origin of the two gaps is shown to be Hund's rule coupling, which leads to a "residual anisotropy" beyond the compensation of the Dzyaloshinskii-Moriya term by the symmetric anisotropy that would be valid without Hund's coupling.

引用

页码：1 / 5

页数：5

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