Structure of multiple spin-flop states in BaCu2Si2O7 -: art. no. 174416

被引：20
|
作者：
Zheludev, A
Ressouche, E
Tsukada, I
Masuda, T
Uchinokura, K
机构：
[1] Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA
[2] CENG, MDN, SPSMS, DRFMC, F-38054 Grenoble, France
[3] Cent Res Inst Elect Power Ind, Komae, Tokyo 2018511, Japan
[4] Univ Tokyo, Dept Adv Mat Sci, Bunkyo Ku, Tokyo 1138656, Japan
[5] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
来源：
PHYSICAL REVIEW B | 2002年 / 65卷 / 17期
关键词：
D O I：
10.1103/PhysRevB.65.174416
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The unusual two-stage spin-flop transition in the quasi-one-dimensional S=1/2 antiferromagnet BaCu2Si2O7 is studied by single-crystal neutron diffraction. The staggered magnetization in the system, aligned along the (0,0,1) direction in zero field, rotates towards the (0,1,0) direction at H(c1)approximate to2 T. A second reorientation occurs at H(c2)approximate to4.8 T, when the staggered magnetization aligns itself along (1,0,0). The relative orientations of adjacent spins remain more or less unchanged in the various spin-flop phases. This behavior is inconsistent with the previously proposed theoretical explanation of the two-stage transition.
引用
收藏
页码：1744161 / 1744166
页数：6
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